Document:

<PAGE>

                                                                    Exhibit 10.6

================================================================================

                                    Form of
                               $2,500,000,000
                      364-DAY REVOLVING CREDIT AGREEMENT

                                  dated as of

                                March 30, 2001

                                     among

                                  NNG, INC.,

                         NORTHROP GRUMMAN CORPORATION,

                           LITTON INDUSTRIES, INC.,

                           The Lenders Party Hereto,

                           THE CHASE MANHATTAN BANK

                                      and

                          CREDIT SUISSE FIRST BOSTON,
                          as Co-Administrative Agents

                                      and

                           THE CHASE MANHATTAN BANK
                               as Payment Agent

                          ___________________________

                          SALOMON SMITH BARNEY INC.,
                             as Syndication Agent

                            THE BANK OF NOVA SCOTIA
                                      and
                       DEUTSCHE BANC ALEX. BROWN, INC.,
                          as Co-Documentation Agents

                           JP MORGAN, a division of
                             CHASE SECURITIES INC.
                                      and
                          CREDIT SUISSE FIRST BOSTON,
                 as Joint Lead Arrangers and Joint Bookrunners

================================================================================
<PAGE>

                            TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                               Page
                                                                                               ----

                                   ARTICLE I

                                  Definitions

<S>                                                                                            <C>
SECTION 1.01.  Defined Terms.................................................................    2
SECTION 1.02.  Classification of Loans and Borrowings........................................   20
               --------------------------------------
SECTION 1.03.  Terms Generally...............................................................   20
SECTION 1.04.  Accounting Terms; GAAP........................................................   20
[SECTION 1.05.  Certain Financial Covenant Calculations......................................   21

                                  ARTICLE II

                                  The Credits

SECTION 2.01.  Commitments...................................................................   21
SECTION 2.02.  Revolving Loans and Revolving Borrowings......................................   21
SECTION 2.03.  Requests for Revolving Borrowings.............................................   22
SECTION 2.04.  Competitive Bid Procedure.....................................................   23
SECTION 2.05.  Funding of Revolving Borrowings...............................................   25
SECTION 2.06.  Interest Elections............................................................   25
SECTION 2.07.  Termination and Reduction of Commitments......................................   27
SECTION 2.08.  Repayment of Loans; Evidence of Debt..........................................   27
SECTION 2.09.  Prepayment of Revolving Loans.................................................   28
SECTION 2.10.  Fees..........................................................................   29
SECTION 2.11.  Interest......................................................................   29
SECTION 2.12.  Alternate Rate of Interest....................................................   30
SECTION 2.13.  Increased Costs...............................................................   31
SECTION 2.14.  Break Funding Payments........................................................   32
SECTION 2.15.  Taxes.........................................................................   33
SECTION 2.16.  Payments Generally; Pro Rata Treatment; Sharing of Setoffs....................   34
SECTION 2.17.  Mitigation Obligations; Replacement of Lenders................................   36

                                  ARTICLE III

Representations and Warranties
SECTION 3.01.  Corporate Existence...........................................................   36
SECTION 3.02.  Certain Financial Information.................................................   37
SECTION 3.03.  Litigation....................................................................   38
SECTION 3.04.  No Breach.....................................................................   38
SECTION 3.05.  Corporate Action..............................................................   38
SECTION 3.06.  Approvals.....................................................................   39
SECTION 3.07.  Use of Proceeds, Etc..........................................................   39
SECTION 3.08.  ERISA.........................................................................   39
SECTION 3.09.  Taxes.........................................................................   39
</TABLE>
<PAGE>

                                                                               2

<TABLE>
<S>                                                                                            <C>
SECTION 3.10.  Funded Debt....................................................................   39
SECTION 3.11.  Properties.....................................................................   40
SECTION 3.12.  Environmental Matters..........................................................   40
SECTION 3.13.  True and Complete Disclosure...................................................   40
SECTION 3.14.  Acquisition....................................................................   41
SECTION 3.15.  Intercompany Indebtedness......................................................   41

                                  ARTICLE IV

                                  Conditions

SECTION 4.01.  Effective Date.................................................................  41

                                   ARTICLE V

                             Affirmative Covenants

SECTION 5.01.  Financial Statements...........................................................  44
SECTION 5.02.  Existence, Payment of Taxes, ERISA, Etc........................................  45
SECTION 5.03.  Notice of Litigation...........................................................  46
SECTION 5.04.  Insurance......................................................................  46
SECTION 5.05.  Access to Books and Properties.................................................  46
SECTION 5.06.  Ratings by Moody's and S&P.....................................................  47

                                  ARTICLE VI

                              Negative Covenants

SECTION 6.01.  Restricted Payments............................................................  47
SECTION 6.03.  Guarantees.....................................................................  48
SECTION 6.04.  Fundamental Changes and Acquisitions...........................................  48
SECTION 6.05.  Limitation on Liens............................................................  49
SECTION 6.06.  Investments....................................................................  50
SECTION 6.07.  Indebtedness...................................................................  51
SECTION 6.08.  Leverage Ratio.................................................................  52
SECTION 6.09.  Funded Debt to Consolidated EBITDA Ratio.......................................  52
SECTION 6.10.  Fixed Charge Coverage Ratio....................................................  52
SECTION 6.11.  Use of Proceeds................................................................  53
SECTION 6.12.  Margin Stock...................................................................  53
SECTION 6.13.  Interest Rate Protection Agreements............................................  53
SECTION 6.14.  Modifications of Certain Documents.............................................  53
SECTION 6.15.  Subsidiary Equity Issuance.....................................................  53

                                  ARTICLE VII

Events of Default.............................................................................  53
</TABLE>
<PAGE>

                                                                               3

<TABLE>
<CAPTION>
                                 ARTICLE VIII

<S>                                                                                          <C>
The Agents..................................................................................   57

                                  ARTICLE IX

Joint and Several Liability of Borrowers....................................................   59

                                   ARTICLE X

                                 Miscellaneous

SECTION 10.01.  Notices......................................................................  61
SECTION 10.02.  Waivers; Amendments..........................................................  61
SECTION 10.03.  Expenses; Indemnity; Damage Waiver...........................................  62
SECTION 10.04.  Successors and Assigns; Joint and Several Obligations........................  63
SECTION 10.05.  Survival.....................................................................  66
SECTION 10.06.  Counterparts; Integration; Effectiveness.....................................  66
SECTION 10.07.  Severability.................................................................  66
SECTION 10.08.  Right of Setoff..............................................................  67
SECTION 10.09.  Governing Law; Jurisdiction; Consent to Service of Process...................  67
SECTION 10.10.  WAIVER OF JURY TRIAL.........................................................  67
SECTION 10.11.  Headings.....................................................................  68
SECTION 10.12.  Confidentiality..............................................................  68
SECTION 10.13.  Interest Rate Limitation.....................................................  68
</TABLE>
<PAGE>

                                                                               4

SCHEDULES:
---------

Schedule 1.01(a)        -    Refinanced Debt
Schedule 2.01           -    Commitments
Schedule 3.03           -    Material Litigation
Schedule 3.06           -    Government Approvals
Schedule 6.07           -    Outstanding Indebtedness After Giving Effect to the
                             Acquisition

EXHIBITS:
--------

Exhibit A               -   Form of Assignment and Acceptance
Exhibit B-1             -   Form of Opinion of Sheppard, Mullin, Richter &
                            Hampton LLP, counsel for the Borrowers
Exhibit B-2             -   Form of Opinion of John Mullan, Assistant General
                            Counsel of Northrop Grumman Corporation
Exhibit B-3             -   Form of Opinion of W. Burks Terry, General Counsel
                            of Litton Industries, Inc.
Exhibit B-4             -   Form of Opinion of Kaye, Scholer LLP, special New
                            York counsel for the Borrowers
Exhibit C               -   Form of Note
Exhibit D               -   Form of Confidentiality Agreement
<PAGE>

                    CREDIT AGREEMENT dated as of March 30, 2001, among NNG,
               INC., a Delaware corporation (the "Company"); NORTHROP GRUMMAN
               CORPORATION, a Delaware corporation ("Northrop Operating"); at
               all times after it shall have become a subsidiary of the Company,
               LITTON INDUSTRIES, INC., a Delaware corporation ("Litton
               Operating" and, together with the Company and Northrop Operating,
               the "Borrowers"); the LENDERS party hereto, THE CHASE MANHATTAN
               BANK and CREDIT SUISSE FIRST BOSTON, as Co-Administrative Agents,
               SALOMON SMITH BARNEY INC., as Syndication Agent, and THE BANK OF
               NOVA SCOTIA and DEUTSCHE BANC ALEX. BROWN INC. as Co-
               Documentation Agents.

          The Company intends to acquire (the "Acquisition") Litton Operating
pursuant to the Amended and Restated Agreement and Plan of Merger dated as of
January 23, 2001 (the "Merger Agreement"), among Northrop Operating, LII
Acquisition, Inc. ("Litton Merger Sub") and Litton Operating. Pursuant to the
Merger Agreement, Litton Merger Sub has made an offer (the "Exchange Offer") to
acquire all the issued and outstanding capital stock of Litton Operating for
consideration consisting of (a) in the case of Litton Operating's common stock,
at the election of the holders thereof and subject to certain other conditions
and adjustments, (i) $80.25 per common share, net to the Seller in cash, and/or
(ii) a combination of new common stock of the Company (approximately 13,000,000
shares in the aggregate) and/or new preferred stock of the Company (valued at up
to $350,000,000 in the aggregate) and (b) in the case of Litton Operating's
preferred stock, $35 per share, net to the Seller in cash. Immediately prior to
the consummation of the Exchange Offer, the Company will cause a newly formed,
wholly-owned subsidiary ("Northrop Merger Sub") to merge (the "Northrop Merger")
with and into Northrop Operating, as consideration for which the existing
stockholders of Northrop Operating will receive common stock of the Company. As
promptly as practicable following the consummation of the Exchange Offer, (i)
Litton Merger Sub will merge with and into Litton Operating (the "Litton Merger"
and, together with the Northrop Merger, the "Mergers") in a transaction in
which, subject to stockholders' dissent rights, each issued and outstanding
share of common stock of Litton Operating not acquired in the Exchange Offer
will be converted into the right to receive $80.25 per common share in cash and
(ii) Litton Operating will become a party to this Agreement as a Borrower. The
aggregate consideration payable to the stockholders of Litton Operating in the
Acquisition will be approximately not greater than $4,000,000,000 in cash and
stock. In connection and substantially concurrent with the Acquisition, Northrop
Operating and Litton Operating will repay all amounts outstanding under, and
terminate, their primary existing bank credit agreements (the "Existing Credit
Agreements") and repay the Refinanced Debt.
<PAGE>

                                                                               2

          The parties hereto agree as follows:

                                   ARTICLE I

                                  Definitions

           SECTION 1.01.  Defined Terms.  As used in this Agreement, the
following terms have the meanings specified below:

          "ABR", when used in reference to any Revolving Loan or Revolving
Borrowing, refers to whether such Revolving Loan, or the Revolving Loans
comprising such Revolving Borrowing, are bearing interest at a rate determined
by reference to the Alternate Base Rate.

          "Acquisition" has the meaning assigned to such term in the preamble to
this Agreement.

          "Adjusted LIBO Rate" means, with respect to any Eurodollar Revolving
Borrowing for any Interest Period, an interest rate per annum (rounded upwards,
if necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such
Interest Period multiplied by (b) the Statutory Reserve Rate.

          "Administrative Questionnaire" means an Administrative Questionnaire
in a form supplied by the Payment Agent.

          "Affiliate" means, with respect to a specified Person, another Person
that directly, or indirectly through one or more intermediaries, Controls or is
Controlled by or is under common Control with the Person specified.

          "Agents" means, collectively, the Co-Administrative Agents and the
Payment Agent.

          "Alternate Base Rate" means, for any day, a rate per annum equal to
the greater of (a) the Prime Rate in effect on such day and (b) the Federal
Funds Effective Rate in effect on such day plus 1/2 of 1%. Any change in the
Alternate Base Rate due to a change in the Prime Rate or the Federal Funds
Effective Rate shall be effective from and including the effective date of such
change in the Prime Rate or the Federal Funds Effective Rate, respectively.

          "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment. If
the Commitments have terminated or expired, the Applicable Percentages shall be
determined based upon the Commitments most recently in effect, giving effect to
any assignments.

          "Applicable Rate" means, for any day, with respect to any Eurodollar
Revolving Loan or ABR Loan, or with respect to the facility fees payable
hereunder, as the case may be, the
<PAGE>

                                                                               3

applicable rate per annum set forth below under the caption "Eurodollar Spread",
"ABR Spread" or "Facility Fee Rate", as the case may be, based upon the ratings
by Moody's and S&P, respectively, applicable on such date to the Senior Long
Term Debt:

==========================================================================
         Senior Long Term             Facility    Eurodollar     ABR
           Debt Ratings               Fee Rate      Spread     Spread
--------------------------------------------------------------------------
Category 1                              0.100%       0.650%    0.000%
BBB+ or higher or Baal or higher
--------------------------------------------------------------------------
Category 2                              0.125%       0.875%    0.000%
BBB or Baa2, and no other
 Category applies
--------------------------------------------------------------------------
Category 3                              0.175%       1.075%    0.075%
BBB- and Baa3
--------------------------------------------------------------------------
Category 4                              0.250%       1.250%    0.250%
BBB- and Ba1 or BB+ and Baa3
--------------------------------------------------------------------------
Category 5                              0.300%       1.450%    0.450%
BB+ and Ba1
--------------------------------------------------------------------------
Category 6                              0.375%       1.875%    0.875%
Lower than BB+ or lower
than Ba1
--------------------------------------------------------------------------

If either Moody's or S&P shall not have in effect a rating for the Senior Long
Term Debt, then the Company and the Co-Administrative Agents shall endeavor in
good faith to agree upon a Substitute Rating Agency and the ratings of such
Substitute Rating Agency corresponding to the ratings of Moody's or S&P, as the
case may be, in each of the Categories in the table above, and following such
agreement the Applicable Rate shall be determined by substituting the ratings of
such Substitute Rating Agency applicable to the Senior Long Term Debt for the
ratings of Moody's or S&P, as the case may be, in the table above; provided,
that (a) a single Substitute Rating Agency may not be substituted pursuant to
this sentence for both Moody's and S&P and (b) until the Company and the Co-
Administrative Agents shall have reached agreement on the matters referred to in
this sentence, the Applicable Rate shall be determined by reference to the
single available rating by Moody's or S&P, as the case may be (or, if there is
no available rating, the rating most recently in effect). If the ratings
established or deemed to have been established by Moody's and S&P (or a
Substitute Rating Agency) for the Senior Long Term Debt shall be changed (other
than as a result of a change in the rating system of Moody's or S&P (or a
Substitute Rating Agency)), such change shall be effective as of the date on
which it is first announced by the applicable rating agency. Each change in the
Applicable Rate shall apply during the period commencing on the effective date
of such change and ending on the date immediately preceding the effective date
of the next such change. If the rating system of Moody's or S&P or an applicable
Substitute Rating Agency shall change, the Company and the Lenders shall
negotiate in good faith to amend this definition to reflect such changed rating
system and, pending the effectiveness of any
<PAGE>

                                                                               4

such amendment, the Applicable Rate shall be determined by reference to the
rating most recently in effect from such rating agency prior to such change.

          "Assignment and Acceptance" means an assignment and acceptance entered
into by a Lender and an assignee (with the consent of any party whose consent is
required by Section 10.04), and accepted by the Payment Agent, in the form of
Exhibit A or any other form approved by the Payment Agent and the Borrowers.

          "Availability Period" means the period from and including the
Effective Date to but excluding the earlier of the Maturity Date and the date of
termination of the Commitments.

          "Bankruptcy Code" means the Federal Bankruptcy Code of 1978, as
amended from time to time.

          "Board" means the Board of Governors of the Federal Reserve System of
the United States of America.

          "Borrowers" means Northrop Operating and the Company and, from and
after its execution of this Agreement as provided in Section 10.14, Litton
Operating.

          "Borrowing" means a group of Loans of the same type, made, converted
or continued on the same date and, in the case of Eurodollar Loans or Fixed Rate
Loans, as to which a single Interest Period applies.

          "Business Day" means any day that is not a Saturday, Sunday or other
day on which commercial banks in New York City are authorized or required by law
to remain closed; provided that, when used in connection with a Eurodollar Loan,
the term "Business Day" shall also exclude any day on which banks are not open
for dealings in dollar deposits in the London interbank market.

          "Capital Expenditures" means, for any period, expenditures (including,
without limitation, the aggregate amount of Capital Lease Obligations incurred
during such period) made by the Company or any of the Subsidiaries to acquire or
construct fixed assets, plant and equipment (including renewals, improvements
and replacements, but excluding repairs) during such period computed in
accordance with GAAP.

          "Capital Lease Obligations" of any Person means the obligations of
such Person to pay rent or other amounts under any lease of (or other
arrangement conveying the right to use) Property, which obligations are required
to be classified and accounted for as capital leases on a balance sheet of such
Person under GAAP, and the amount of such obligations shall be the capitalized
amount thereof determined in accordance with GAAP.

          "Change in Law" means (a) the adoption of any law, rule or regulation
after the date of this Agreement, (b) any change in any law, rule or regulation
or in the interpretation or application thereof by any Governmental Authority
after the date of this Agreement or (c) compliance by any Lender (or, for
purposes of Section 2.13(b), by any lending office of such
<PAGE>

                                                                               5

Lender or by such Lender's holding company, if any) with any request, guideline
or directive (whether or not having the force of law) of any Governmental
Authority made or issued after the date of this Agreement.

          "Chase" means The Chase Manhattan Bank and its successors.

          "Class", when used in reference to any Loan or Borrowing, refers to
whether such Loan, or the Loans comprising such Borrowing, are Revolving Loans
or Competitive Loans.

          "Co-Administrative Agents" means Chase and CSFB, in their capacities
as co-administrative agents for the Lenders hereunder, or any successors,
thereto appointed in accordance with Article VIII.

          "Code" means the Internal Revenue Code of 1986, as amended from time
to time.

          "Commitment" means, with respect to each Lender, the commitment of
such Lender to make Revolving Loans hereunder, expressed as an amount
representing the maximum aggregate permitted amount of such Lender's Revolving
Credit Exposure hereunder, as such commitment may be (a) reduced from time to
time pursuant to Section 2.07 and (b) reduced or increased from time to time
pursuant to assignments by or to such Lender pursuant to Section 10.04. The
initial amount of each Lender's Commitment is set forth on Schedule 2.01, or in
the Assignment and Acceptance pursuant to which such Lender shall have assumed
its Commitment, as applicable.

          "Company" has the meaning assigned to such term in the preamble to
this Agreement.

          "Competitive Bid" means an offer by a Lender to make a Competitive
Loan in accordance with Section 2.04.

          "Competitive Bid Rate" means, with respect to any Competitive Bid, the
Margin or the Fixed Rate, as applicable, offered by the Lender making such
Competitive Bid.

          "Competitive Bid Request" means a request by a Borrower for
Competitive Bids in accordance with Section 2.04.

          "Competitive Loan" means a loan made pursuant to Section 2.04.

          "Competitive Loan Exposure" means, with respect to any Lender at any
time, the aggregate principal amount of the outstanding Competitive Loans of
such Lender.

          "Consolidated EBITDA" means, for any period, Consolidated Net Income
for such period plus, without duplication and to the extent deducted in
determining such Net Income, the sum of (i) Interest Expense for such period,
(ii) consolidated income tax expense for such period, (iii) all amounts
attributable to depreciation and amortization for such period, (iv) any noncash
charges for such period and (v) fees and expenses incurred in connection with
the Transactions,
<PAGE>

                                                                               6

minus, without duplication and to the extent included in determining such Net
Income, any noncash income for such period.

          "Consolidated Net Income" means, for the Company and the Subsidiaries
(determined on a consolidated basis in accordance with GAAP) for any fiscal
period, an amount equal to the consolidated net income of the Company and its
Subsidiaries for such fiscal period.

          "Consolidated Net Income Available for Restricted Payments" means an
amount equal to (i) the sum of $300,000,000 plus 80% (or minus 100% in case of
consolidated net loss) of Consolidated Net Income for the period (taken as one
accounting period) commencing January 1, 2001 and terminating on the Fiscal Date
immediately preceding the date of any proposed Restricted Payment, less (ii) the
sum of (A) the aggregate amount of all dividends (other than dividends payable
solely in common stock of the Company) and other distributions paid or declared
by the Company (for all periods on or after the Effective Date) or either
Northrop Operating or Litton Operating (for the period from January 1, 2001
through the Effective Date) on any class of its stock and (B) the excess (if
any) of the aggregate amount expended, directly or indirectly, by the Company
(for all periods on or after the Effective Date) or by either Northrop Operating
or Litton Operating (for the period from January 1, 2001 through the Effective
Date) for the redemption, purchase or other acquisition of any shares of its
stock, over the aggregate amount of any cash or cash equivalents received by the
Company on and after said date as consideration for the sale of any shares of
its stock.

          "Consolidated Stockholders' Equity" means the amount of stockholders'
equity of the Company and the Subsidiaries (determined on a consolidated basis
in accordance with GAAP).

          "Consolidating Financial Statements" means, for any fiscal period, the
unaudited consolidating statements of financial position and income for the
corporate office and principal operating centers of the Company and the
Subsidiaries substantially in the form of the consolidating financial statements
for such corporate office and principal operating centers as at and for Northrop
Operating's fiscal year ended December 31, 1999 heretofore delivered to the
Lenders.

          "Control" means the possession, directly or indirectly, of the power
to direct or cause the direction of the management or policies of a Person,
whether through the ability to exercise voting power, by contract or otherwise.
"Controlling" and "Controlled" have meanings correlative thereto.

          "CSFB" means Credit Suisse First Boston and its successors.

          "Debt Service" means, for any period, the sum, for the Company and the
Subsidiaries (determined on a consolidated basis in accordance with GAAP), of
the following: (a) all regularly scheduled payments of principal of Indebtedness
(including, without limitation, the principal component of any payments in
respect of Capital Lease Obligations but excluding amounts repaid under Working
Capital Credit Lines) made during such period plus (b) all Interest Expense for
such period.
<PAGE>

                                                                               7

          "Default" means any event or condition which constitutes an Event of
Default or which with notice, passage of time or both would become an Event of
Default.

          "Disbursement Account" means the Company's account (910-2-475762) with
the Payment Agent, or, at any time, any other account of the Company with the
Payment Agent that shall have been designated in a notice delivered by the
Company to the Payment Agent not fewer than three Business Days prior to such
time.

          "Disposition" means any sale, assignment, transfer or other
disposition (or series of related sales, assignments, transfers or other
dispositions) of any Property (whether now owned or hereafter acquired) by the
Company or any of the Subsidiaries to any other Person (other than the Company
or a Subsidiary) that results in Net Cash Payments to the Company and/or one or
more Subsidiaries in an aggregate amount greater than $10,000,000, excluding any
sales, assignments, transfers or dispositions of inventory in the ordinary
course of business.

          "Dollars" or "$" refers to lawful money of the United States of
America.

          "Effective Date" means the date on which the conditions specified in
Section 4.01 are satisfied (or waived in accordance with Section 10.02).

          "Environmental Laws" means any and all Federal, state, local and
foreign laws, rules or regulations, and any orders or decrees, in each case as
now or hereafter in effect, relating to the regulation or protection of human
health, safety or the environment or to emissions, discharges, releases or
threatened releases of pollutants, contaminants, chemicals or toxic or hazardous
substances or wastes into the indoor or outdoor environment, including, without
limitation, ambient air, soil, surface water, ground water, wetlands, land or
subsurface strata, or otherwise relating to the manufacture, processing,
distribution, use, treatment, storage, disposal, transport or handling of
pollutants, contaminants, chemicals or toxic or hazardous substances or wastes.

          "Equity" means (i) any capital stock or any warrants, options or
rights exercisable in respect of capital stock, including any capital stock
issued upon the exercise of any such warrants, options or rights (other than any
capital stock, warrants, options or rights issued to directors, officers or
employees of the Company or any of the Subsidiaries pursuant to employee benefit
plans, stock option plans or long-term incentive plans established in the
ordinary course of business and any capital stock of the Company issued upon the
exercise of such warrants, options or rights) or (ii) any other security or
instrument representing an equity interest in the Company or any of the
Subsidiaries.

          "Equity Issuance" means (a) any issuance or sale (including any
issuance or sale as a result of a conversion or exchange of debt securities) by
the Company or any Subsidiary of Equity or (b) the receipt by the Company of any
capital contribution (whether or not evidenced by any equity security issued by
the Company) other than (i) any issuance of Equity of the Company to the former
stockholders of Litton Operating in connection with the Acquisition, (ii) any
issuance of Equity to, or receipt of any such capital contribution from, the
Company or a Subsidiary and (iii) any issuance of Equity of the Company to
employees, officers or directors of the Company and
<PAGE>

                                                                               8

the Subsidiaries pursuant to employee stock options or employee benefit plans in
effect from time to time.

          "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.

          "ERISA Affiliate" means any corporation or trade or business which is
a member of the same controlled group of corporations (within the meaning of
Section 414(b) of the Code) as the Company or is under common control (within
the meaning of Section 414(c) of the Code) with the Company.

          "Eurodollar", when used in reference to any Loan or Borrowing, refers
to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Adjusted LIBO Rate or, in the
case of Competitive Loans, the LIBO Rate.

          "Event of Default" has the meaning assigned to such term in Article
VII.

          "Exchange Act" means the Securities Exchange Act of 1934, together
with the Rules and Regulations of the SEC thereunder.

          "Exchange Offer" has the meaning assigned to such term in the preamble
to this Agreement.

          "Excluded Taxes" means, with respect to any Lender or any other
recipient of any payment to be made by or on account of any obligation of a
Borrower hereunder, (a) income or franchise taxes imposed on (or measured by)
its net income by the United States of America, or by the jurisdiction under the
laws of which such recipient is organized or in which its principal office is
located or, in the case of any Lender, in which its applicable lending office is
located, (b) any branch profits taxes imposed by the United States of America or
any similar tax imposed by any other jurisdiction described in clause (a) above
and (c) in the case of a Foreign Lender (other than an assignee pursuant to a
request by a Borrower under Section 2.17(b)), any withholding tax imposed by the
United States of America that (i) is in effect and would apply to amounts
payable to such Foreign Lender at the time such Foreign Lender becomes a party
to this Agreement (or designates a new lending office), except to the extent
that such Foreign Lender (or its assignor, if any) was entitled, at the time of
designation of a new lending office (or assignment), to receive additional
amounts from a Borrower with respect to any withholding tax pursuant to Section
2.15, or (ii) is attributable to such Foreign Lender's failure to comply with
Section 2.15(e).

          "Existing Credit Agreements" means, with respect to Northrop
Operating, the Credit Agreement dated as of April 15, 1994, as amended by an
Amended and Restated Credit Agreement dated as of March 1, 1996 and a Second
Amended and Restated Credit Agreement dated as of November 1, 1996, as amended,
among Northrop Operating, Chase, Chase Securities Inc. and Bank of America
National Trust and Savings Association and, with respect to Litton Operating,
the 364-Day and Five-Year Credit Agreements dated as of March 22, 2000 among
Litton Industries, Inc. and Morgan Guaranty Trust Company of New York.
<PAGE>

                                                                               9

          "Federal Funds Effective Rate" means, for any day, the weighted
average (rounded upwards, if necessary, to the next 1/100 of 1%) of the rates on
overnight Federal funds transactions with members of the Federal Reserve System
arranged by Federal funds brokers, as published on the next succeeding Business
Day by the Federal Reserve Bank of New York, or, if such rate is not so
published for any day that is a Business Day, the average (rounded upwards, if
necessary, to the next 1/100 of 1%) of the quotations for such day for such
transactions received by the Payment Agent from three Federal funds brokers of
recognized standing selected by it.

          "Financial Officer" means any of the chief financial officer,
principal accounting officer, treasurer, assistant treasurer, or controller of
the Company.

          "Fiscal Dates" means the last day of each March, June, September and
December in each year, the first of which shall be the first such day after the
date hereof.

          "Five-Year Credit Agreement" means the Five-Year Credit Agreement
dated as of the date hereof among the Borrowers, the lenders party thereto and
Chase and CSFB, as the co-administrative agents.

          "Fixed Charge Coverage Ratio" means, at any Fiscal Date, the ratio of
(a) the sum of (i) Consolidated EBITDA for the period of four consecutive fiscal
quarters of the Company ending on such date minus (ii) Capital Expenditures
during such period to (b) the sum of (i) Interest Expense for such period plus
(ii) Restricted Payments made by the Company or, prior to the Northrop Merger,
by Northrop Operating during such period.

          "Fixed Rate" means, with respect to any Competitive Loan (other than a
Eurodollar Competitive Loan), the fixed rate of interest per annum specified by
the Lender making such Competitive Loan in its related Competitive Bid.

          "Fixed Rate Loan" means a Competitive Loan bearing interest at a Fixed
Rate.

          "Foreign Lender" means any Lender that is organized under the laws of
a jurisdiction other than the United States of America, a State thereof or the
District of Columbia.

          "Funded Debt" means any Indebtedness of the Company or any Subsidiary
for borrowed money or the deferred purchase price of Property which is shown on
the consolidated financial statements of the Company as a liability, in any
event including (a) Capital Lease Obligations and (b) Guarantees which are
deemed Funded Debt under Section 6.03 hereof but excluding (i) items customarily
reflected as current liabilities and classified as other than debt (it being
understood that progress payments, trade accounts payable, obligations under
leases which are not capitalized leases and income taxes payable are excluded
from "Funded Debt" under this definition) and (ii) deferred income taxes minus
cash and cash equivalents of the Company and its Subsidiaries.

          "Funded Debt to Consolidated EBITDA Ratio" means, at any Fiscal Date,
the ratio of (a) Funded Debt as at such date to (b) Consolidated EBITDA for the
period of four consecutive fiscal quarters of the Company ending on such date.
<PAGE>

                                                                              10

          "GAAP" means generally accepted accounting principles in the United
States of America, applied in accordance with Section 1.04.

          "Government" means the United States of America or any department or
agency thereof.

          "Governmental Authority" means the government of the United States of
America, any other nation or any political subdivision thereof, whether state or
local, and any agency, authority, instrumentality, regulatory body, court,
central bank or other entity exercising executive, legislative, judicial,
taxing, regulatory or administrative powers or functions of or pertaining to
government.

          "Granting Lender" has the meaning assigned to such term in Section
10.04.

          "Guarantee" means, with respect to any Person, a guarantee, an
endorsement, a contingent agreement to purchase or to furnish funds for the
payment or maintenance of, or otherwise to be or become contingently liable
under or with respect to, the Indebtedness, other obligations, net worth,
working capital or earnings of any other Person, or a guarantee of the payment
of dividends or other distributions upon the stock or equity interests of any
other Person, or an agreement to purchase, sell or lease (as lessee or lessor)
Property, products, materials, supplies or services primarily for the purpose of
enabling any other Person to make payment of its obligations or an agreement to
assure a creditor of such Person against loss, and including, without
limitation, causing a bank or other financial institution to issue a standby
letter of credit or other similar instrument supporting the obligations of
another Person, but excluding endorsements for collection or deposit in the
ordinary course of business.  The amount of any Guarantee in respect of
Indebtedness shall be deemed to be an amount equal to the stated or determinable
amount of the related Indebtedness (unless the Guarantee is limited by its terms
to a lesser amount, in which case, to the extent of such amount) or, if not
stated or determinable, the maximum reasonably anticipated liability in respect
thereof as determined by such Person in good faith.  The terms "Guarantee" and
"Guaranteed" used as a verb shall have a correlative meaning.

          "Indebtedness" means, for any Person: (a) obligations created, issued
or incurred by such Person for borrowed money (whether by loan, the issuance and
sale of debt securities or the sale of Property to another Person subject to an
understanding or agreement, contingent or otherwise, to repurchase such Property
from such Person); (b) obligations of such Person to pay the deferred purchase
or acquisition price of Property or services, other than trade accounts payable
(other than for borrowed money) arising, and accrued expenses incurred, in the
ordinary course of business so long as such trade accounts payable are payable
within 180 days of the date the respective goods are delivered or the respective
services are rendered; (c) indebtedness of others secured by a Lien on the
Property of such Person, whether or not the respective Indebtedness so secured
has been assumed by such Person (but only to the extent of the fair market value
of such Property if not assumed by such Person); (d) obligations (contingent or
otherwise) in respect of letters of credit, banker's acceptances and similar
instruments issued or accepted for the account of such Person; (e) Capital Lease
Obligations of such Person; and (f) Guarantees by such Person of Indebtedness of
others.
<PAGE>

                                                                              11

          "Indemnified Taxes" means Taxes other than Excluded Taxes.

          "Indemnitee" has the meaning assigned to such term in Section 10.03.

          "Information Memorandum" means the Confidential Information Memorandum
dated January 2001 relating to the Borrowers and the Acquisition.

          "Interest Election Request" means a request by a Borrower to convert
or continue a Revolving Borrowing in accordance with Section 2.06.

          "Interest Expense" means, for any period, the sum, without
duplication, for the Company and the Subsidiaries (determined on a consolidated
basis in accordance with GAAP), of the following:  (a) all interest in respect
of Funded Debt (including, without limitation, the interest component of any
payments in respect of Capital Lease Obligations) accrued or capitalized during
such period (whether or not actually paid during such period) plus (b) the net
amount payable (or minus the net amount receivable) under Interest Rate
Protection Agreements during such period (whether or not actually paid or
received during such period) minus (c) all interest income accrued during such
period (whether or not actually received during such period).

          "Interest Payment Date" means (a) with respect to any ABR Loan, each
Fiscal Date, (b) with respect to any Eurodollar Loan, the last day of the
Interest Period applicable to the Borrowing of which such Loan is a part and, in
the case of a Eurodollar Borrowing with an Interest Period of more than three
months' duration, each day prior to the last day of such Interest Period that
occurs at intervals of three months' duration after the first day of such
Interest Period and (c) with respect to any Fixed Rate Loan, the last day of the
Interest Period applicable to the Borrowing of which such Loan is a part and, in
the case of a Fixed Rate Borrowing with an Interest Period of more than 90 days'
duration (unless otherwise specified in the applicable Competitive Bid Request),
each day prior to the last day of such Interest Period that occurs at intervals
of 90 days' duration after the first day of such Interest Period, and any other
dates that are specified in the applicable Competitive Bid Request as Interest
Payment Dates with respect to such Borrowing.

          "Interest Period" means (a) with respect to any Eurodollar Borrowing,
the period commencing on the date of such Borrowing and ending on the
numerically corresponding day in the calendar month that is one, two, three or
six months thereafter, as the applicable Borrower may elect, or any other period
agreed to by such Borrower and each Lender, and (b) with respect to any Fixed
Rate Borrowing, the period (which shall not be less than 7 days or more than 360
days) commencing on the date of such Borrowing and ending on the date specified
in the applicable Competitive Bid Request; provided, that (i) if any Interest
Period would end on a day other than a Business Day, such Interest Period shall
be extended to the next succeeding Business Day unless, such next succeeding
Business Day would fall in the next calendar month, in which case such Interest
Period shall end on the immediately preceding Business Day, and (ii) any
Interest Period that commences on the last Business Day of a calendar month (or
on a day for which there is no numerically corresponding day in the last
calendar month of such Interest Period) shall end on the last Business Day of
the last calendar month of such Interest Period.  For purposes hereof, the date
<PAGE>

                                                                              12

of a Borrowing initially shall be the date on which such Borrowing is made and
thereafter shall be the effective date of the most recent conversion or
continuation of such Borrowing.

          "Interest Rate Protection Agreement" means, for any Person, an
interest rate swap, cap or collar agreement or similar arrangement between such
Person and one or more financial institutions providing for the transfer or
mitigation of interest rate risks either generally or under specific
contingencies and entered into as bona fide hedges (and not for speculative
purposes) against such interest rate risks.

          "Investment" means, for any Person:  (a) the acquisition (whether for
cash, Property, services or securities or otherwise) of capital stock, bonds,
notes, debentures or other debt obligations, partnership or other ownership
interests or other securities of any other Person or any agreement to make any
such acquisition (including, any "short sale" or any sale of any securities at a
time when such securities are not owned by the Person entering into such sale);
(b) the making of any deposit with, or advance, loan or other extension of
credit to, any other Person (including the purchase of Property from another
Person subject to an understanding or agreement, contingent or otherwise, to
resell such Property to such Person), but excluding any such advance, loan or
extension of credit having a term not exceeding 180 days arising in connection
with the sale of inventory or supplies by such Person in the ordinary course of
business; or (c) the entering into of any Guarantee of, or other contingent
obligation with respect to, Indebtedness or other liability of any other Person
and (without duplication) any amount committed to be advanced, lent or extended
to such Person.

          "Investment Grade Rating Period" means, after (i) the consummation of
the Acquisition (or the express statement by Moody's and S&P that the same has
been taken into account in reaffirming or announcing the ratings referred to in
clause (ii) below) and (ii) the date after the date hereof on which both Moody's
and S&P shall have first either reaffirmed or announced revised ratings for the
Senior Long Term Debt, any period during which the rating of the Senior Long
Term Debt is BBB- or higher by S&P (or a Substitute Rating is at the
corresponding rating level or higher) and Baa3 or higher by Moody's (or a
Substitute Rating is at the corresponding rating level or higher).

          "Lenders" means the Persons listed on Schedule 2.01 and any other
Person that shall have become a party hereto pursuant to an Assignment and
Acceptance in compliance with Section 10.04, other than any such Person that
shall have ceased to be a party hereto pursuant to an Assignment and Acceptance.

          "Leverage Ratio" means, at any Fiscal Date, the ratio of (a) the
aggregate amount (determined without duplication on a consolidated basis) of all
Funded Debt outstanding at such time to (b) the sum of (i) Consolidated
Stockholders' Equity at such time plus (ii) all Funded Debt outstanding at such
time.

          "LIBO Rate" means, with respect to any Eurodollar Borrowing for any
Interest Period, the rate appearing on Page 3750 of the Telerate Service (or on
any successor or substitute page of such Service, or any successor to or
substitute for such Service, providing rate quotations comparable to those
currently provided on such page of such Service, as determined by the
<PAGE>

                                                                              13

Payment Agent from time to time for purposes of providing quotations of interest
rates applicable to dollar deposits in the London interbank market) at
approximately 11:00 a.m., London time, two Business Days prior to the
commencement of such Interest Period, as the rate for dollar deposits with a
maturity comparable to such Interest Period. In the event that such rate is not
available at such time for any reason, then the "LIBO Rate" with respect to such
Eurodollar Borrowing for such Interest Period shall be the rate at which dollar
deposits of $5,000,000 and for a maturity comparable to such Interest Period are
offered by the principal London office of the Payment Agent in immediately
available funds in the London interbank market at approximately 11:00 a.m.,
London time, two Business Days prior to the commencement of such Interest
Period.

          "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset.
The term "Lien" shall not include the ownership interests in receivables
acquired by a purchaser under a Permitted Receivables Sale Agreement.

          "Litton Operating" means Litton Industries, Inc.

          "Litton Merger" has the meaning assigned to such term in the preamble
to this Agreement.

          "Litton Merger Sub" has the meaning assigned to such term in the
preamble to this Agreement.

          "Litton Operating Senior Indentures" means the Indenture dated as of
December 15, 1991, between Litton Operating and The Bank of New York, as trustee
and the Indenture dated as of April 13, 1998, between Litton Operating and The
Bank of New York, as trustee.

          "Loan" means a Revolving Loan or a Competitive Loan.

          "Loan Documents" means this Agreement and each promissory note, if
any, delivered pursuant to this Agreement, as such documents may be amended,
modified, supplemented or restated from time to time.

          "Margin" means, with respect to any Competitive Loan bearing interest
at a rate based on the LIBO Rate, the marginal rate of interest, if any, to be
added to or subtracted from the LIBO Rate to determine the rate of interest
applicable to such Loan, as specified by the Lender making such Loan in its
related Competitive Bid.

          "Margin Stock" means "margin stock" as defined in Regulation U of the
Board.

          "Material Adverse Effect" means a material adverse effect on (a) the
business, operations, condition (financial or otherwise) or prospects of the
Company and the Subsidiaries taken as a whole, (b) the consummation of the
Acquisition, (c) the ability of the Borrowers to perform their material
obligations under any of the Loan Documents, (d) the validity or enforceability
of any of the Loan Documents, (e) the rights and remedies of the Lenders and the
<PAGE>

                                                                              14

Co-Administrative Agents under any of the Loan Documents or (f) the timely
payment of the principal of or interest on the Loans or other amounts payable in
connection therewith.

          "Material Subsidiary" means, at any time, (a) each Borrower and (b)
any other Subsidiary if, at such time, such Subsidiary would qualify as a
"significant subsidiary" under Regulation S-X of the SEC as in effect on the
date hereof.

          "Maturity Date" means March 29, 2002.

          "Merger Agreement" has the meaning assigned to such term in the
preamble to this Agreement.

          "Moody's" means Moody's Investors Service, Inc. and its successors and
assigns.

          "Multiemployer Plan" means a multiemployer plan defined as such in
Section 3(37) of ERISA to which contributions have been made by the Borrowers or
any ERISA Affiliate and which is covered by Title IV of ERISA.

          "Net Available Proceeds" means:

          (a)  in the case of any Disposition, the amount of Net Cash Payments
     received in connection with such Disposition;

          (b)  in the case of any Equity Issuance, the aggregate amount of any
     cash or cash equivalents received by the Company and the Subsidiaries in
     respect of such Equity Issuance net of all reasonable fees and expenses
     incurred by the Company and the Subsidiaries in connection therewith; and

          (c) in the case of the incurrence by the Company or any Subsidiary of
     any Funded Debt (but excluding Funded Debt under the Five-Year Credit
     Agreement and Funded Debt under Working Capital Credit Lines), the
     aggregate amount of all cash or cash equivalents received by the Company
     and the Subsidiaries in respect of such incurrence of Indebtedness, net of
     all reasonable fees and expenses incurred by the Company and the
     Subsidiaries in connection therewith.

          "Net Cash Payments" means, with respect to any Disposition, the
aggregate amount of all cash payments, and the fair market value of any non-cash
consideration, received by the Company and the Subsidiaries directly or
indirectly in connection with such Disposition; provided that (a) Net Cash
Payments shall be net of (i) the amount of any legal, title and recording tax
expenses, commissions and other fees and expenses paid by the Company and the
Subsidiaries in connection with such Disposition and (ii) any Federal, state and
local income or other taxes estimated in good faith to be payable by the Company
and the Subsidiaries as a result of such Disposition and (b) Net Cash Payments
shall be net of any required repayments by the Company or any of the
Subsidiaries of Indebtedness related to the Property disposed of in such
Disposition.
<PAGE>

                                                                              15

          "Northrop Merger" has the meaning assigned to such term in the
preamble to this Agreement.

          "Northrop Merger Sub" has the meaning assigned to such term in the
preamble to this Agreement.

          "Northrop Operating Senior Indenture" means the Indenture dated as of
October 15, 1994 between Northrop Operating and Chase, as trustee, as
supplemented by the Officers Certificate dated February 27, 1996 pursuant to
Sections 201, 301 and 303 of such Indenture, and as the same shall be further
modified and supplemented and in effect from time to time.

          "Northrop Operating Subordinated Indenture" means the form of
Indenture filed as Exhibit 4-6 to Northrop Operating's Registration Statement on
Form S-3 filed with the SEC on August 19, 1994, as amended by the Northrop
Operating's Form 8-K filed with the SEC on February 28, 1996.

          "Obligations" means (i) the obligations of the Borrowers under this
Agreement and the other Loan Documents with respect to the payment of the
principal of and interest on the Loans when and as due, whether at maturity, by
acceleration, upon one or more dates set for prepayment or otherwise and (ii)
all other monetary obligations of the Borrowers hereunder and thereunder.

          "Other Taxes" means any and all present or future recording, stamp,
documentary, excise, transfer, sales, property or similar taxes, charges or
levies arising from any payment made under any Loan Document or from the
execution, delivery or enforcement of, or otherwise with respect to, any Loan
Document.

          "Participant" has the meaning assigned to such term in Section 10.04.

          "Payment Agent" means Chase, in its capacity as paying agent for the
Lenders hereunder, or any successor thereto appointed in accordance with Article
VIII.

          "PBGC" means the Pension Benefit Guaranty Corporation or any entity
succeeding to any or all of its functions under ERISA.

          "Permitted Investments" means:

          (a)  direct obligations of, or obligations the principal of and
     interest on which are unconditionally guaranteed by, the United States of
     America (or by any agency thereof to the extent such obligations are backed
     by the full faith and credit of the United States of America), in each case
     maturing within one year from the date of acquisition thereof;

          (b)  investments in commercial paper maturing within 270 days from the
     date of acquisition thereof and having, at such date of acquisition, the
     highest credit rating obtainable from S&P or from Moody's;
<PAGE>

                                                                              16

          (c)  investments in certificates of deposit, banker's acceptances and
     time deposits maturing within 180 days from the date of acquisition thereof
     issued or guaranteed by or placed with, and money market deposit accounts
     issued or offered by, any office located in the United States of America of
     any commercial bank organized under the laws of the United States of
     America or any State thereof which has a combined capital and surplus and
     undivided profits of not less than $500,000,000;

          (d)  fully collateralized repurchase agreements with a term of not
     more than 30 days for securities described in clause (a) above and entered
     into with a financial institution satisfying the criteria described in
     clause (c) above; and

          (e)  investments purchased for cash management purposes by offices or
     other establishments of the Company and the Subsidiaries located outside
     the United States of America, to the extent the credit quality of such
     investments is comparable to that of the investments described in clauses
     (a) through (d) above.

          "Person" means any natural person, corporation, limited liability
company, trust, joint venture, association, company, partnership, Governmental
Authority or other entity.

          "Plan" means an employee benefit or other plan established or
maintained by the Company or any ERISA Affiliate and which is covered by Title
IV of ERISA, other than a Multiemployer Plan.

          "Prepayment Event" means:

          (a)  any Disposition that results in Net Available Proceeds of
     $25,000,000 or more; or

          (b)  any series of Dispositions, whether or not related, that have not
     yet been deemed to constitute a Prepayment Event under this clause (b) and
     that have resulted in aggregate Net Available Proceeds of $100,000,000 or
     more (it being agreed that, for purposes of Section 2.07(c), the Net
     Available Proceeds of any such Prepayment Event shall be deemed to have
     been received on the date on which the aggregate Net Available Proceeds
     received by the Company and/or one or more Subsidiaries in respect thereof
     shall equal or exceed $100,000,000); or

          (c)  any Equity Issuance that results in Net Available Proceeds, or

          (d)  the incurrence by the Company or any Subsidiary of any Funded
     Debt after the date hereof, but excluding Funded Debt under this Agreement
     and the Five-Year Credit Agreement (and replacement Indebtedness referred
     to in Section 6.07(a)(i)) and Funded Debt under Working Capital Credit
     Lines.

          "Prime Rate" means the rate of interest per annum publicly announced
from time to time by Chase as its prime rate in effect at its principal office
in New York City; each change in
<PAGE>

                                                                              17

the Prime Rate shall be effective from and including the date such change is
publicly announced as being effective.

          "Property" means any interest in any kind of property or asset,
whether real, personal or mixed, or tangible or intangible, whether now owned or
hereafter acquired.

          "Quarterly Period" means the period from but excluding one Fiscal Date
through and including the next succeeding Fiscal Date.

          "Refinanced Debt" means the Indebtedness of the Borrowers and their
respective subsidiaries listed in Schedule 1.01(a).

          "Register" has the meaning set forth in Section 10.04.

          "Related Parties" means, with respect to any specified Person, such
Person's Affiliates and the respective directors, officers, employees, agents
and advisors of such Person and such Person's Affiliates.

          "Required Lenders" means, at any time, Lenders having Revolving Credit
Exposures and unused Commitments representing more than 50% of the total
Revolving Credit Exposures and unused Commitments at such time; provided that,
in connection with the exercise of remedies under Article VII and for all
purposes after the Loans become due and payable or the Commitments expire or
terminate,  "Required Lenders" will mean, at any time, Lenders having Revolving
Credit Exposures and outstanding Competitive Loans representing more than 50% of
the total Revolving Credit Exposures and outstanding Competitive Loans at such
time.

          "Restricted Payment" means any dividend (other than dividends payable
solely in stock of the Company) or any other distribution with respect to any
stock of the Company, whether now or hereafter outstanding, or any payment on
account of the purchase, acquisition, redemption or other retirement, directly
or indirectly, of any shares of such stock.

          "Revolving Borrowing" means a Borrowing consisting of Revolving Loans.

          "Revolving Borrowing Request" means a request by a Borrower for a
Revolving Borrowing in accordance with Section 2.03.

          "Revolving Commitment" means, with respect to each Lender, the
commitment, if any, of such Lender to make Revolving Loans, expressed as an
amount representing the maximum aggregate amount of such Lender's Revolving
Exposure hereunder, as such commitment may be reduced from time to time pursuant
to Article II and reduced or increased from time to time pursuant to Article X.
The initial amount of each Lender's Revolving Commitment is set forth on
Schedule 2.01. The initial aggregate amount of the Lenders' Revolving
Commitments is $2,500,000,000.

          "Revolving Credit Exposure" means, with respect to any Lender at any
time, the sum of the outstanding principal amount of such Lender's Revolving
Loans at such time.
<PAGE>

                                                                              18

          "Revolving Loan" means a loan made pursuant to Section 2.10 and 2.03.

          "SEC" means the Securities and Exchange Commission or any successor.

          "Senior Long Term Debt" means Indebtedness of the Company that (a) is
not contractually subordinated to any other Indebtedness of the Company, (b) is
considered as of the date of its incurrence under GAAP to be "long-term" debt,
(c) is not secured by a Lien on any Property of the Company or any of the
Subsidiaries or, if secured, is secured only by a pledge of the capital stock of
one or more Subsidiaries on a pari passu basis with the Indebtedness of the
Company hereunder and (d) upon which no other Person is liable, under a
Guarantee or otherwise, or if another Person is so liable, such Person is liable
on a pari passu basis for the Indebtedness of the Company hereunder.

          "Senior Securities" means $750,000,000 of Northrop Operating's 7 1/8%
Senior Notes due 2011 and $750,000,000 of Northrop Operating's 7 3/4% Senior
Notes due 2031 issued under the Northrop Operating Senior Indenture and
guaranteed concurrently with the Effective Date by the Company and Litton
Operating.

          "S&P" means Standard & Poor's Rating Group, a division of McGraw Hill,
Inc., and its successors and assigns.

          "SPC" has the meaning assigned to such term in Section 10.04.

          "Statutory Reserve Rate" means a fraction (expressed as a decimal),
the numerator of which is the number one and the denominator of which is the
number one minus the aggregate of the maximum reserve percentages (including any
marginal, special, emergency or supplemental reserves) expressed as a decimal
established by the Board to which the Payment Agent is subject, for eurodollar
funding (currently referred to as "Eurodollar Liabilities" in Regulation D of
the Board).  Such reserve percentages shall include those imposed pursuant to
such Regulation D.  Eurodollar Revolving Loans shall be deemed to constitute
Eurodollar funding and to be subject to such reserve requirements without
benefit of or credit for proration, exemptions or offsets that may be available
from time to time to any Lender under such Regulation D or any comparable
regulation.  The Statutory Reserve Rate shall be adjusted automatically on and
as of the effective date of any change in any reserve percentage.

          "Subordinated Indebtedness" means, with respect to any of the
Borrowers, (a) Indebtedness issued pursuant to the Northrop Operating
Subordinated Indenture (i) that does not have any principal or sinking fund
payment due prior to the Maturity Date and (ii) in respect of which interest is
payable not more often than semiannually and (b) Indebtedness (i) for which one
or more of the Company, Northrop Operating or Litton Operating is directly and
primarily liable, (ii) in respect of which none of the Subsidiaries (other than
Northrop Operating or Litton Operating) is contingently or otherwise obligated,
(iii) that does not have any principal or sinking fund payment due prior to the
Maturity Date, (iv) in respect of which interest is payable not more often than
semi-annually, (v) that is subordinated to the obligations of the Borrowers to
pay principal of and interest on the Loans and fees and other amounts payable
hereunder on terms no less favorable, taken as a whole, to the Lenders than
those contained in the Northrop Operating Subordinated Indenture, (vi) that does
not in any event contain financial covenants or events of default more
restrictive than those in the Northrop Operating
<PAGE>

                                                                              19

Subordinated Indenture and (vii) the documentation for which contains other
terms that, taken as a whole, are no less favorable to the Lenders than those
contained in the Northrop Operating Subordinated Indenture.

          "subsidiary" means, with respect to any Person (the "parent") at any
date, any corporation, limited liability company, partnership, association or
other entity the accounts of which would be consolidated with those of the
parent in the parent's consolidated financial statements if such financial
statements were prepared in accordance with GAAP as of such date, as well as any
other corporation, limited liability company, partnership, association or other
entity of which securities or other ownership interests representing more than
50% of the equity or more than 50% of the ordinary voting power or, in the case
of a partnership, more than 50% of the general partnership interests are, as of
such date, owned, controlled or held.

          "Subsidiary" means any direct or indirect subsidiary of the Company.

          "Substitute Rating Agency" means any rating agency (other than Moody's
or S&P) proposed by the Company and reasonably acceptable to the Co-
Administrative Agents.

          "Taxes" means any and all present or future taxes, levies, imposts,
duties, deductions, charges or withholdings imposed by any Governmental
Authority.

          "Termination Event" shall mean any event or condition which
constitutes grounds under Section 4042 of ERISA for the termination of, or for
the appointment of a trustee to administer, any Plan and which involves a
liability of the Company to the PBGC in excess of $50,000,000.

          "Transactions" means the execution, delivery and performance by the
Borrowers of this Agreement and the other Loan Documents, the borrowing of the
Loans and the use of the proceeds thereof, the Acquisition (including the making
and consummation of the Exchange Offer and the Mergers), the refinancing of the
Existing Credit Agreements and the Refinanced Debt and the other transactions in
connection therewith.

          "Type", when used in reference to any Revolving Loan or Revolving
Borrowing, refers to whether the rate of interest on such Revolving Loan, or on
the Revolving Loans comprising such Revolving Borrowing, is determined by
reference to the Adjusted LIBO Rate or the Alternate Base Rate.

          "Wholly-Owned Subsidiary" shall mean any Subsidiary of which all of
the equity securities or other ownership interests (other than, in the case of a
corporation, directors' qualifying shares) are owned by the Company or one or
more Wholly-Owned Subsidiaries.

          "Working Capital Credit Lines" means short-term credit facilities
(including commercial paper facilities and facilities providing for the issuance
of letters of credit or similar instruments but excluding the facilities
established by this Agreement and the Five-Year Credit Agreement) extended to
the Borrowers and Subsidiaries for working capital purposes.
<PAGE>

                                                                              20

          SECTION 1.02.  Classification of Loans and Borrowings.  For purposes
                         ---------------------------------------
of this Agreement, Loans may be classified and referred to by Class (e.g., a
                                                                     ----
"Revolving Loan") or by Type (e.g., a "Eurodollar Loan") or by Class and Type
                              ----
(e.g., a "Eurodollar Revolving Loan"). Borrowings also may be classified and
-----
referred to by Class (e.g., a "Revolving Borrowing") or by Type (e.g., a
                      ----                                       ----
"Eurodollar Borrowing") or by Class and Type (e.g., a "Eurodollar Revolving
                                              ----
Borrowing").

          SECTION 1.03.  Terms Generally. The definitions of terms herein shall
apply equally to the singular and plural forms of the terms defined. Whenever
the context may require, any pronoun shall include the corresponding masculine,
feminine and neuter forms. The words "include", "includes" and "including" shall
be deemed to be followed by the phrase "without limitation". The word "will"
shall be construed to have the same meaning and effect as the word "shall".
Unless the context requires otherwise (a) any definition of or reference to any
agreement, instrument or other document herein shall be construed as referring
to such agreement, instrument or other document as from time to time amended,
supplemented or otherwise modified (subject to any restrictions on such
amendments, supplements or modifications set forth herein), (b) any reference
herein to any Person shall be construed to include such Person's successors and
assigns, (c) the words "herein", "hereof" and "hereunder", and words of similar
import, shall be construed to refer to this Agreement in its entirety and not to
any particular provision hereof, (d) all references herein to Articles,
Sections, Exhibits and Schedules shall be construed to refer to Articles and
Sections of, and Exhibits and Schedules to, this Agreement and (e) the words
"asset" and "property" shall be construed to have the same meaning and effect
and to refer to any and all tangible and intangible assets and properties,
including cash, securities, accounts and contract rights.

          SECTION 1.04.  Accounting Terms; GAAP.  Except as otherwise expressly
provided herein, all terms of an accounting or financial nature shall be
construed in accordance with GAAP, as in effect from time to time; provided
that, if the Company notifies the Co-Administrative Agents that the Company
requests an amendment to any provision hereof to eliminate the effect of any
change occurring after the date hereof in GAAP or in the application thereof on
the operation of such provision (or if the Co-Administrative Agents notify the
Company that the Required Lenders request an amendment to any provision hereof
for such purpose), regardless of whether any such notice is given before or
after such change in GAAP or in the application thereof, then such provision
shall be interpreted on the basis of GAAP as in effect and applied immediately
before such change shall have become effective until such notice shall have been
withdrawn or such provision amended in accordance herewith.

          SECTION 1.05.  Certain Financial Covenant Calculations.  For purposes
of determining the Funded Debt to Consolidated EBITDA Ratio and the Consolidated
Fixed Charge Coverage Ratio for the four quarter periods ending June 30, 2001,
September 30, 2001 and December 31, 2001, the fiscal quarter ending March 31,
2001, shall be excluded and:

          (a)  Consolidated EBITDA and Capital Expenditures shall be determined
on a pro forma basis combining, as applicable to reflect the then four most
recently completed fiscal quarters (excluding the fiscal quarter ending March
31, 2001), (i) the balance sheet information
<PAGE>

                                                                              21

and results of Litton Operating at and for the quarter ended July 31, 2000 set
forth in Litton's public filings with the SEC as of the Effective Date, and the
actual balance sheet information and results of Northrop operating at and for
the quarter ended June 30, 2000; (ii) the balance sheet information and results
of Litton operating at and for the quarter ended October 31, 2000 set forth in
Litton's public filings with the SEC as of the Effective Date, and the actual
balance sheet information and results of Northrop Operating at and for the
quarter ended September 30, 2000; and (iii) the balance sheet information and
results of Litton Operating at and for the quarter ended January 31, 2001 set
forth in Litton's public filings with the SEC as of the Effective Date, and the
actual balance sheet information and results of Northrop Operating at and for
the quarter ended December 31, 2000; and

          (b)  Interest Expense shall be determined on a pro forma basis by
annualizing, as applicable to reflect the fiscal quarters then most recently
completed since the Effective Date, (i) as of June 30, 2001, by multiplying the
actual consolidated Interest Expense of the Company for the fiscal quarter then
ended by four, (ii), as of September 30, 2001, by multiplying the actual
consolidated Interest Expense of the Company for the two fiscal quarter period
then ended by two, and (iii) as of December 31, 2001, by multiplying the actual
consolidated Interest Expense of the Company for the three fiscal quarter period
then ended by four thirds.

                                  ARTICLE II

                                  The Credits

          SECTION 2.01.  Commitments.  Subject to the terms and conditions set
forth herein, each Lender agrees to make Revolving Loans to the Borrowers from
time to time during the Availability Period in an aggregate principal amount
that will not result in (a) such Lender's Revolving Credit Exposure exceeding
such Lender's Commitment or (b) the sum of the total Revolving Credit Exposures
plus the total Competitive Loan Exposures exceeding the total Commitments.
Within the foregoing limits and subject to the terms and conditions set forth
herein, the Borrowers may borrow, prepay and reborrow Revolving Loans.

          SECTION 2.02.  Revolving Loans and Revolving Borrowings. (a) Each
Revolving Loan shall be made as part of a Revolving Borrowing consisting of
Revolving Loans made by the Lenders ratably in accordance with their respective
Commitments. The failure of any Lender to make any Revolving Loan required to be
made by it shall not relieve any other Lender of its obligations hereunder;
provided that the Commitments and Competitive Bids of the Lenders are several
and no Lender shall be responsible for any other Lender's failure to make Loans
as required.

          (b)  Subject to Section 2.13, (i) each Revolving Borrowing shall be
comprised entirely of ABR Loans or Eurodollar Loans as the applicable Borrower
may request in accordance herewith and (ii) each Competitive Borrowing shall be
comprised entirely of Eurodollar Loans or Fixed Rate Loans as the Borrower may
request in accordance herewith. Each Competitive Loan shall be made in
accordance with the procedures set forth in Section 2.04. Each Lender at its
option may make any Eurodollar Loan by causing any domestic or foreign branch or
Affiliate of
<PAGE>

                                                                              22

such Lender to make such Loan; provided that any exercise of such option shall
not affect the obligation of the Borrowers to repay such Loan in accordance with
the terms of this Agreement.

          (c)  At the commencement of each Interest Period for any Eurodollar
Revolving Borrowing, such Revolving Borrowing shall be in an aggregate amount
that is an integral multiple of $5,000,000 and not less than $25,000,000.  At
the time that each ABR Borrowing is made, such Borrowing shall be in an
aggregate amount that is an integral multiple of $5,000,000 and not less than
$10,000,000.  Notwithstanding the foregoing, any Revolving Borrowing may be in
an aggregate amount that is equal to the entire unused balance of the
Commitments.  Each Competitive Borrowing shall be in an aggregate amount that is
an integral multiple of $5,000,000 and not less than $25,000,000.  Revolving
Borrowings of more than one Type may be outstanding at the same time, provided
that there shall not at any time be more than a total of 15 Eurodollar Revolving
Borrowings outstanding.

          (d)  Notwithstanding any other provision of this Agreement, no
Borrower shall be entitled to request, or to elect to convert or continue, any
Revolving Borrowing if the Interest Period requested with respect thereto would
end after the Maturity Date, or to request any Competitive Borrowing if the
Interest Period requested with respect thereto would end after the Maturity
Date.

          SECTION 2.03.  Requests for Revolving Borrowings. To request a
Revolving Borrowing, the Borrowers (or any of them) shall notify the Payment
Agent of such request by telephone or by telecopy (a) in the case of a
Eurodollar Revolving Borrowing, not later than 11:00 a.m., New York City time,
three Business Days before the date of the proposed Revolving Borrowing or (b)
in the case of an ABR Borrowing, not later than 11:00 a.m., New York City time,
on the same day as the date of the proposed Revolving Borrowing. Each such
Revolving Borrowing Request shall be irrevocable and, if telephonic, shall be
confirmed promptly by hand delivery or telecopy to the Payment Agent of a
written Revolving Borrowing Request in a form agreed to by the Payment Agent and
signed by the applicable Borrower. Each such telephonic and written Revolving
Borrowing Request shall specify the following information in compliance with
Section 2.02:

          (i)  the aggregate amount of the requested Revolving Borrowing;

          (ii)  the date of such Revolving Borrowing, which shall be a Business
     Day;

          (iii) whether such Revolving Borrowing is to be an ABR Borrowing or a
     Eurodollar Revolving Borrowing; and

          (iv) in the case of a Eurodollar Revolving Borrowing, the initial
     Interest Period to be applicable thereto, which shall be a period
     contemplated by the definition of the term "Interest Period".

If no election as to the Type of Revolving Borrowing is specified, then the
requested Revolving Borrowing shall be an ABR Borrowing.  If no Interest Period
is specified with respect to any requested Eurodollar Revolving Borrowing, then
the applicable Borrower shall be deemed to have
<PAGE>

                                                                              23

selected an Interest Period of one month's duration. Promptly following receipt
of a Revolving Borrowing Request in accordance with this Section, the Payment
Agent shall advise each Lender of the details thereof and of the amount of such
Lender's Revolving Loan to be made as part of the requested Revolving Borrowing.

          SECTION 2.04.  Competitive Bid Procedure.  (a)  Subject to the terms
and conditions set forth herein, from time to time during the Availability
Period any Borrower may request Competitive Bids and may (but shall not have any
obligation to) accept Competitive Bids and borrow Competitive Loans; provided
that after giving effect to any Borrowing of Competitive Loans the sum of the
total Revolving Credit Exposures plus the total Competitive Loan Exposure shall
not exceed the total Commitments.  To request Competitive Bids, the Borrower
shall notify the Payment Agent of such request by telephone or by telecopy, in
the case of a Eurodollar Borrowing, not later than 11:00 a.m., New York City
time, four Business Days before the date of the proposed Borrowing and, in the
case of a Fixed Rate Borrowing, not later than 11:00 a.m., New York City Time,
one Business Day before the date of the proposed Borrowing; provided that the
Borrower may submit up to (but not more than) five Competitive Bid Requests on
the same day, but a Competitive Bid Request shall not be made within five
Business Days after the date of any previous Competitive Bid Request, unless any
and all such previous Competitive Bid Requests shall have been withdrawn or all
Competitive Bids received in response thereto rejected.  Each such telephonic
Competitive Bid Request shall be confirmed promptly by hand delivery or telecopy
to the Payment Agent of a written Competitive Bid Request in a form approved by
the Payment Agent and signed by the Borrower.  Each such telephonic and written
Competitive Bid Request shall specify the following information in compliance
with Section 2.03:

          (i)   the aggregate principal amount of the requested Borrowing;

          (ii)  the date of such Borrowing, which shall be a Business Day;

          (iii) whether such Borrowing is to be a Eurodollar Borrowing or a
     Fixed Rate Borrowing; and

          (iv)  the Interest Period to be applicable to such Borrowing, which
     shall be a period contemplated by the definition of the term "Interest
     Period" and shall end no later than the Maturity Date.

Promptly following receipt of a Competitive Bid Request in accordance with this
Section, the Payment Agent shall notify the Lenders of the details thereof by
telecopy, inviting the Lenders to submit Competitive Bids.

          (b)   Each Lender may (but shall not have any obligation to) make one
or more Competitive Bids to the Borrower in response to a Competitive Bid
Request. Each Competitive Bid by a Lender must be in a form approved by the
Payment Agent and must be received by the Applicable Agent by telecopy, in the
case of a Eurodollar Competitive Borrowing, not later than 9:30 a.m., New York
City Time, three Business Days before the proposed date of such Competitive
Borrowing, and in the case of a Fixed Rate Borrowing, not later than 9:30 a.m.,
New York City Time, on the proposed date of such Competitive Borrowing.
Competitive Bids that do not
<PAGE>

                                                                              24

conform substantially to the form approved by the Payment Agent may be rejected
by the Payment Agent, and the Payment Agent shall notify the applicable Lender
as promptly as practicable. Each Competitive Bid shall specify (i) the
principal amount (which shall be an amount at least equal to $5,000,000 and an
integral multiple of $1,000,000 and which may equal the entire principal amount
of the Competitive Borrowing requested by the Borrower) of the Competitive Loan
or Loans that the Lender is willing to make, (ii) the Competitive Bid Rate or
Rates at which the Lender is prepared to make such Loan or Loans (expressed as a
percentage rate per annum in the form of a decimal to no more than four decimal
places) and (iii) the Interest Period applicable to each such Loan and the last
day thereof.

          (c)  The Payment Agent shall notify the Borrower by telecopy, not
later than 45 minutes after the applicable deadline for receipt of Competitive
Bids, of the Competitive Bid Rate and the principal amount specified in each
Competitive Bid and the identity of the Lender that shall have made such
Competitive Bid.

          (d)  Subject only to the provisions of this paragraph, the Borrower
may accept or reject any Competitive Bid. The Borrower shall notify the Payment
Agent by telecopy or by telephone, confirmed by telecopy in a form approved by
the Payment Agent, whether and to what extent it has decided to accept or reject
each Competitive Bid, in the case of a Eurodollar Competitive Borrowing, not
later than 11:00 a.m., New York City time, three Business Days before the date
of the proposed Competitive Borrowing, and in the case of a Fixed Rate
Borrowing, not later than 11:00 a.m., New York City time, on the proposed date
of the Competitive Borrowing; provided that (i) the failure of the Borrower to
give such notice shall be deemed to be a rejection of each Competitive Bid, (ii)
the Borrower shall not accept a Competitive Bid made at a particular Competitive
Bid Rate if the Borrower rejects a Competitive Bid made at a lower Competitive
Bid Rate, (iii) the aggregate amount of the Competitive Bids accepted by the
Borrower shall not exceed the aggregate amount of the requested Competitive
Borrowing specified in the related Competitive Bid Request, (iv) to the extent
necessary to comply with clause (iii) above, the Borrower may accept Competitive
Bids at the same Competitive Bid Rate in part, which acceptance, in the case of
multiple Competitive Bids at such Competitive Bid Rate, shall be made pro rata
in accordance with the amount of each such Competitive Bid, and (v) except
pursuant to clause (iv) above, no Competitive Bid shall be accepted for a
Competitive Loan unless such Competitive Loan is in a minimum principal amount
of at least $5,000,000 that is an integral multiple of $1,000,000; provided
further that if a Competitive Loan must be in an amount less than $5,000,000
because of the provisions of clause (iv) above, such Competitive Loan may be for
a minimum of $1,000,000 or any integral multiple thereof, and in calculating the
pro rata allocation of acceptances of portions of multiple Competitive Bids at a
particular Competitive Bid Rate pursuant to clause (iv) the amounts shall be
rounded to integral multiples of $1,000,000 in a manner determined by the
Borrower. A notice given by the Borrower pursuant to this paragraph shall be
irrevocable.

          (e)  The Payment Agent shall promptly notify each bidding Lender by
telecopy whether or not its Competitive Bid has been accepted (and, if so, the
amount and Competitive Bid Rate so accepted), and each successful bidder will
thereupon become bound, subject to the terms and conditions hereof, to make the
Competitive Loan in respect of which its Competitive Bid has been accepted.
<PAGE>

                                                                              25

          (f)  If the Payment Agent shall elect to submit a Competitive Bid in
its capacity as a Lender, it shall submit such Competitive Bid directly to the
Borrower at least one quarter of an hour earlier than the time by which the
other Lenders are required to submit their Competitive Bids to the Payment Agent
pursuant to paragraph (b) of this Section.

          SECTION 2.05.  Funding of Revolving Borrowings. (a) Each Lender shall
make each Loan to be made by it hereunder on the proposed date thereof by wire
transfer of immediately available funds by 1:00 p.m., New York City time, to the
account of the Payment Agent most recently designated by it for such purpose by
notice to the Lenders. The Payment Agent will make such Loans available to the
Borrowers by promptly crediting the amounts so received, in like funds, to
Disbursement Account.

          (b)  Unless the Payment Agent shall have received notice from a Lender
prior to the proposed date of any Borrowing that such Lender will not make
available to the Payment Agent such Lender's share of such Borrowing, the
Payment Agent may assume that such Lender has made such share available on such
date in accordance with paragraph (a) of this Section and may, in reliance upon
such assumption, make available to the Borrowers a corresponding amount.  In
such event, if a Lender has not in fact made its share of the applicable
Borrowing available to the Payment Agent, then the applicable Lender and the
Borrowers severally agree to pay to the Payment Agent forthwith on demand such
corresponding amount with interest thereon, for each day from and including the
date such amount is made available to the Borrowers to but excluding the date of
payment to the Payment Agent, at (i) in the case of such Lender, the greater of
(x) the Federal Funds Effective Rate and (y) a rate determined by the Payment
Agent in accordance with banking industry rules on interbank compensation or
(ii) in the case of the Borrowers, the interest rate for the applicable
Borrowing.  If such Lender pays such amount to the Payment Agent, then such
amount shall constitute such Lender's Loan included in such Borrowing.

          SECTION 2.06.  Interest Elections. (a) Each Revolving Borrowing
initially shall be of the Type specified in the applicable Revolving Borrowing
Request and, in the case of a Eurodollar Revolving Borrowing, shall have an
initial Interest Period as specified in such Revolving Borrowing Request.
Thereafter, the applicable Borrower may elect to convert such Borrowing to a
different Type or to continue such Revolving Borrowing and, in the case of a
Eurodollar Revolving Borrowing, may elect Interest Periods therefor, all as
provided in this Section. The applicable Borrower may elect different options
with respect to different portions of the affected Revolving Borrowing, in which
case each such portion shall be allocated ratably among the Lenders holding the
Revolving Loans comprising such Revolving Borrowing, and the Revolving Loans
comprising each such portion shall be considered a separate Revolving Borrowing.
This Section shall not apply to Competitive Borrowings, which may not be
converted or continued.

          (b)  To make an election pursuant to this Section, a Borrower shall
notify the Payment Agent of such election by telephone or by telecopy by the
time that a Revolving Borrowing Request would be required under Section 2.03 if
such Borrower were requesting a Revolving Borrowing of the Type resulting from
such election to be made on the effective date of such election. Each such
Interest Election Request shall be irrevocable and, if telephonic, shall be
<PAGE>

                                                                              26

confirmed promptly by hand delivery or telecopy to the Payment Agent of a
written Interest Election Request in a form approved by the Payment Agent and
signed by such Borrower.

          (c)   Each telephonic and written Interest Election Request shall
specify the following information in compliance with Section 2.02:

          (i)   the Revolving Borrowing to which such Interest Election Request
     applies and, if different options are being elected with respect to
     different portions thereof, the portions thereof to be allocated to each
     resulting Revolving Borrowing (in which case the information to be
     specified pursuant to clauses (iii) and (iv) below shall be specified for
     each resulting Revolving Borrowing);

          (ii)  the effective date of the election made pursuant to such
     Interest Election Request, which shall be a Business Day;

          (iii) whether the resulting Borrowing is to be an ABR Borrowing or a
     Eurodollar Revolving Borrowing; and

          (iv)  if the resulting Revolving Borrowing is a Eurodollar Revolving
     Borrowing, the Interest Period to be applicable thereto after giving effect
     to such election, which shall be a period contemplated by the definition of
     the term "Interest Period".

If any such Interest Election Request requests a Eurodollar Revolving Borrowing
but does not specify an Interest Period, then the applicable Borrower shall be
deemed to have selected an Interest Period of one month's duration.

          (d)   Promptly following receipt of an Interest Election Request, the
Payment Agent shall advise each Lender of the details thereof and of such
Lender's portion of each resulting Revolving Borrowing.

          (e)   If a Borrower fails to deliver a timely Interest Election
Request with respect to a Eurodollar Revolving Borrowing prior to the end of the
Interest Period applicable thereto, then, unless such Revolving Borrowing is
repaid as provided herein, at the end of such Interest Period such Revolving
Borrowing shall be converted to an ABR Borrowing. Notwithstanding any contrary
provision hereof, if an Event of Default has occurred and is continuing and the
Payment Agent, at the request of the Required Lenders, so notifies the
Borrowers, then, so long as an Event of Default is continuing (i) no outstanding
Revolving Borrowing may be converted to or continued as a Eurodollar Revolving
Borrowing and (ii) unless repaid, each Eurodollar Revolving Borrowing shall be
converted to an ABR Borrowing at the end of the Interest Period applicable
thereto.

          SECTION 2.07.  Termination and Reduction of Commitments. (a) Unless
previously terminated, the Commitments shall terminate on the Maturity Date.

          (b)   The Borrowers may at any time terminate, or from time to time
reduce, the Commitments; provided that (i) each reduction of the Commitments
shall be in an amount that is an integral multiple of $5,000,000 and not less
than $25,000,000 and (ii) the Borrowers shall not
<PAGE>

                                                                              27

terminate or reduce the Commitments if, after giving effect to any concurrent
prepayment of the Revolving Loans in accordance with Section 2.09, the total
Revolving Credit Exposures and Competitive Loan Exposures would exceed the total
Commitments.

          (c)  In the event and on each occasion that any Net Available Proceeds
are received by or on behalf of the Company or any Subsidiary in respect of any
Prepayment Event, the Borrowers shall, within three Business Days after such Net
Available Proceeds are received, permanently reduce the Commitments hereunder
(and prepay any outstanding Revolving Loans hereunder) by an aggregate amount
equal to the amount of such Net Available Proceeds. Amounts to be applied
pursuant to this paragraph to the prepayment of Revolving Loans shall be applied
first to reduce outstanding ABR Loans and then to prepay Eurodollar Revolving
Loans. Notwithstanding the foregoing, in the event the amount of any prepayment
required to be made pursuant to this paragraph shall exceed the aggregate
principal amount of the ABR Loans outstanding (the amount of any such excess
being called the "Excess Amount") and the immediate prepayment of Eurodollar
Loans would result in amounts becoming due under Section 2.14, the Borrowers
shall have the right to prepay all the outstanding ABR Loans and to prepay
Eurodollar Loans in an aggregate amount equal to the Excess Amount at the ends
of the current Interest Periods applicable thereto.

          (d)  Immediately upon completion of the Acquisition, the Commitments
will be reduced by an aggregate amount equal to the number of common and
preferred shares of Litton Operating acquired in the Acquisition for
consideration consisting of stock of the Company multiplied by (i)$80.25 per
share in the case of the common shares of Litton Operating and (ii) $35 per
share in the case of preferred shares of Litton Operating.  The Commitments will
also be reduced, on the Effective Date, by $500,000,000 as a result of the
issuance of the Senior Securities.

          (e)  The Borrowers shall notify the Payment Agent of any election to
terminate, or of any optional or mandatory reduction of, the Commitments under
paragraph (b) or (c) of this Section at least three Business Days prior to the
effective date of such termination or reduction, specifying such election or
requirement and the effective date thereof.  Promptly following receipt of any
notice, the Payment Agent shall advise the Lenders of the contents thereof.
Each notice delivered by a Borrower pursuant to this Section shall be
irrevocable; provided that a notice of termination of the Commitments delivered
by a Borrower under paragraph (b) of this Section may state that such notice is
conditioned upon the effectiveness of other credit facilities, in which case
such notice may be revoked by a Borrower (by notice to the Payment Agent on or
prior to the specified effective date) if such condition is not satisfied.  Any
termination or reduction of the Commitments shall be permanent.  Each reduction
of the Commitments shall be made ratably among the Lenders in accordance with
their respective Commitments.

          SECTION 2.08.  Repayment of Loans; Evidence of Debt. (a) The Borrowers
hereby unconditionally jointly and severally promise to pay (i) to the Payment
Agent for the account of each Lender the unpaid principal amount of each Loan on
the Maturity Date and (ii) to the Payment Agent for the account of each Lender
the unpaid principal amount of each Competitive Loan on the last day of the
Interest Period applicable to such Loan.
<PAGE>

                                                                              28

          (b)  Each Lender shall maintain in accordance with its usual practice
an account or accounts evidencing the Indebtedness of the Borrowers to such
Lender resulting from each Loan made by such Lender, including the amounts of
principal and interest payable and paid to such Lender from time to time
hereunder.

          (c)  The Payment Agent shall maintain accounts in which it shall
record (i) the amount of each Loan made hereunder, the Type thereof and the
Interest Period, if any, applicable thereto, (ii) the amount of any principal or
interest due and payable or to become due and payable from the Borrowers to each
Lender hereunder and (iii) the amount of any sum received by the Payment Agent
hereunder for the account of the Lenders and each Lender's share thereof.

          (d)  The entries made in the accounts maintained pursuant to paragraph
(b) or (c) of this Section shall be prima facie evidence of the existence and
amounts of the obligations recorded therein; provided that the failure of any
Lender or the Payment Agent to maintain such accounts or any error therein shall
not in any manner affect the obligation of a Borrower to repay the Loans in
accordance with the terms of this Agreement.

          (e)  Any Lender may request that Loans made by it be evidenced by a
promissory note. In such event, each Borrower shall execute and deliver to such
Lender a promissory note payable to the order of such Lender (or, if requested
by such Lender, to such Lender and its registered assigns) in substantially the
form attached hereto as Exhibit C. Thereafter, the Loans evidenced by such
promissory note and interest thereon shall at all times (including after
assignment pursuant to Section 10.04) be represented by one or more promissory
notes in such form payable to the order of the payee named therein (or, if such
promissory note is a registered note, to such payee and its registered assigns).

          SECTION 2.09.  Prepayment of Revolving Loans.  (a)  The Borrowers
shall have the right at any time and from time to time to prepay any Revolving
Borrowing in whole or in part, subject to prior notice in accordance with
paragraph (c) of this Section and payment of any amounts required under Section
2.14; provided that the Borrower shall not have the right to prepay any
Competitive Loan without the prior consent of the Lender thereof.

          (b)  In the event and on each occasion that the total Revolving Credit
Exposures and Competitive Loan Exposures exceed the total Commitments, the
Borrowers shall promptly prepay Revolving Borrowings in an aggregate amount
sufficient to eliminate such excess.

          (c)  The Borrowers shall notify the Payment Agent by telephone
(confirmed by telecopy) or by telecopy of any prepayment hereunder (i) in the
case of prepayment of a Eurodollar Revolving Borrowing, not later than 11:00
a.m., New York City time, three Business Days before the date of such
prepayment, or (ii) in the case of prepayment of an ABR Borrowing, not later
than 11:00 a.m., New York City time, on the Business Day of such prepayment.
Each such notice shall be irrevocable and shall specify the prepayment date and
the principal amount of each Revolving Borrowing or portion thereof to be
prepaid; provided that, if a notice of prepayment is given in connection with a
conditional notice of termination of the Commitments as contemplated by Section
2.07, then such notice of prepayment may be revoked if such notice of
termination is revoked in accordance with Section 2.07. Promptly following
receipt of any such notice, the
<PAGE>

                                                                              29

Payment Agent shall advise the Lenders of the contents thereof. Each partial
prepayment, other than a mandatory prepayment, of any Revolving Borrowing shall
be in an amount that would be permitted in the case of an advance of a Revolving
Borrowing of the same Type as provided in Section 2.02. Each prepayment of a
Revolving Borrowing shall be applied ratably to the Loans included in the
prepaid Revolving Borrowing. Prepayments shall be accompanied by accrued
interest to the extent required by Section 2.11.

          SECTION 2.10.  Fees. (a) The Borrowers agree, jointly and severally,
to pay to the Payment Agent for the account of each Lender a facility fee, which
shall accrue at the relevant Facility Fee Rate specified in the definition of
Applicable Rate on the daily amount of the Commitment of such Lender (whether
used or unused) during the period from the date of this Agreement to but
excluding the Maturity Date; provided that, if such Lender continues to have any
Revolving Credit Exposure or Competitive Loan Exposure after the Maturity Date
or other termination of all the Commitments, then such facility fee shall
continue to accrue on the daily aggregate amount of such Lender's Revolving
Credit Exposure and Competitive Loan Exposure from and including the Maturity
Date or other termination of all the Commitments to but excluding the date on
which such Lender ceases to have any Revolving Credit Exposure or Competitive
Loan Exposure. Accrued facility fees shall be payable in arrears on June 30,
2001 and on the last day of each subsequent September, December, March and June
of each year, on any date prior to the Maturity Date on which the Commitments
terminate and on the Maturity Date, commencing on the first such date to occur
after the date hereof; provided that any facility fees accruing after the
Maturity Date or other termination of all the Commitments shall be payable on
demand. All facility fees shall be computed on the basis of a year of 360 days
and shall be payable for the actual number of days elapsed (including the first
day but excluding the last day).

          (b)  The Borrowers agree, jointly and severally, to pay to the Payment
Agent, for the accounts of the Lenders, on the date hereof, the upfront fees
separately agreed upon in the Fee Letter dated January 29, 2001, between the
Borrowers and the Co-Administrative Agents.

          (c)  The Borrowers agree, jointly and severally, to pay to each of the
Co-Administrative Agents, for their own accounts, fees payable in the amounts
and at the times separately agreed upon between the Borrowers and the Co-
Administrative Agents.

          (d)  All fees payable hereunder shall be paid on the dates due, in
immediately available funds, to the Payment Agent for distribution to the
Persons entitled thereto. Fees paid shall not be refundable under any
circumstances.

          SECTION 2.11.  Interest. (a) The Loans comprising each ABR Borrowing
shall bear interest at the Alternate Base Rate plus the Applicable Rate.

          (b)  The Loans comprising each Eurodollar Borrowing shall bear
interest (i) in the case of a Eurodollar Revolving Loan, at the Adjusted LIBO
Rate for the Interest Period in effect for such Revolving Borrowing plus the
Applicable Rate or (ii) in the case of a Eurodollar Competitive Loan, at the
LIBO Rate for the Interest Period in effect for such Borrowing plus (or minus,
as applicable) the Margin applicable to such Loan.
<PAGE>

                                                                              30

          (c)  Each Fixed Rate Loan shall bear interest at the Fixed Rate
applicable to such Loan.

          (d)  Notwithstanding the foregoing, if any principal of or interest on
any Loan or any fee or other amount payable by the Borrowers hereunder is not
paid when due, whether at stated maturity, upon acceleration or otherwise, such
overdue amount shall bear interest, after as well as before judgment, at a rate
per annum equal to (i) in the case of overdue principal of any Loan, 2% plus the
rate otherwise applicable to such Loan as provided in the preceding paragraphs
of this Section or (ii) in the case of any other amount, 2% plus the rate
applicable to ABR Loans as provided in paragraph (a) of this Section.

          (e)  Accrued interest on each Loan shall be payable in arrears on each
Interest Payment Date for such Loan and upon termination of the Commitments;
provided that (i) interest accrued pursuant to paragraph (c) of this Section
shall be payable on demand, (ii) in the event of any repayment or prepayment of
any Loan (other than a prepayment of an ABR Loan prior to the end of the
Availability Period), accrued interest on the principal amount repaid or prepaid
shall be payable on the date of such repayment or prepayment and (iii) in the
event of any conversion of any Eurodollar Revolving Loan prior to the end of the
current Interest Period therefor, accrued interest on such Revolving Loan shall
be payable on the effective date of such conversion.

          (f)  All interest hereunder shall be computed on the basis of a year
of 360 days, except that interest computed by reference to the Alternate Base
Rate at times when the Alternate Base Rate is based on the Prime Rate shall be
computed on the basis of a year of 365 days (or 366 days in a leap year), and in
each case shall be payable for the actual number of days elapsed (including the
first day but excluding the last day).  The applicable Alternate Base Rate or
Adjusted LIBO Rate shall be determined by the Payment Agent, and such
determination shall be conclusive absent manifest error.

          SECTION 2.12.  Alternate Rate of Interest. If prior to the
commencement of any Interest Period for a Eurodollar Borrowing:

          (a)  the Payment Agent determines (which determination shall be
     conclusive absent manifest error) that adequate and reasonable means do not
     exist for ascertaining the Adjusted LIBO Rate or the LIBO Rate, as
     applicable, for such Interest Period; or

          (b)  the Payment Agent is advised by the Required Lenders (or, in the
     case of a Eurodollar Competitive Loan, the Lender required to make such
     Loan) that the Adjusted LIBO Rate or the LIBO Rate, as applicable, for such
     Interest Period will not adequately and fairly reflect the cost to such
     Lenders or such Lender of making or maintaining the Eurodollar Loans
     included in such Borrowing or its Eurodollar Loan for such Interest Period;

then the Payment Agent shall give notice thereof to the Borrowers and the
Lenders by telephone or telecopy as promptly as practicable thereafter and,
until the Payment Agent notifies the Borrowers and the Lenders that the
circumstances giving rise to such notice no longer exist, (i) any Interest
Election Request that requests the conversion of any Revolving Borrowing to, or
continuation of
<PAGE>

                                                                              31

any Revolving Borrowing as, a Eurodollar Revolving Borrowing shall be
ineffective, and such Revolving Borrowing shall be converted to or continued as
an ABR Borrowing on the last day of the Interest Period applicable thereto, (ii)
if any Revolving Borrowing Request requests a Eurodollar Revolving Borrowing,
such Revolving Borrowing shall be made as an ABR Borrowing (or such Revolving
Borrowing shall not be made if the Borrowers revoke (and in such circumstances,
such Revolving Borrowing Request may be revoked notwithstanding any other
provision of this Agreement) such Revolving Borrowing Request by telephonic
notice, confirmed promptly in writing, not later than one Business Day prior to
the proposed date of such Revolving Borrowing) and (iii) any request by the
Borrowers for a Eurodollar Competitive Borrowing shall be ineffective; provided
that (A) if the circumstances giving rise to such notice do not affect all the
Lenders, then requests by the Borrowers for Eurodollar Competitive Borrowings
may be made to Lenders that are not affected thereby and (B) if the
circumstances giving rise to such notice affect only one Type of Borrowings,
then the other Type of Borrowings shall be permitted.

          SECTION 2.13.  Increased Costs.  (a)  If any Change in Law shall:

          (i)  impose, modify or deem applicable any reserve, special deposit or
     similar requirement against assets of, deposits with or for the account of,
     or credit extended by, any Lender (except to the extent any such reserve
     requirement is reflected in the Adjusted LIBO Rate); or

          (ii) impose on any Lender or the London interbank market any other
     condition affecting this Agreement or Eurodollar or Fixed Rate Loans made
     by such Lender;

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Eurodollar or Fixed Rate Loan (or of
maintaining its obligation to make any such Loan) or to increase the cost to
such Lender or to reduce the amount of any sum received or receivable by such
Lender hereunder (whether of principal, interest or otherwise), in each case by
an amount deemed by such Lender in good faith to be material, then the Borrowers
will pay to such Lender, within ten Business Days following a demand therefor
accompanied by the certificate referred to in paragraph (c) below, such
additional amount or amounts as will compensate such Lender on an after-tax
basis for such additional costs incurred or reduction suffered.

          (b)  If any Lender determines that any Change in Law regarding capital
requirements has or would have the effect of reducing the rate of return on such
Lender's capital or on the capital of such Lender's holding company, if any, as
a consequence of this Agreement or the Loans made by such Lender to a level
below that which such Lender or such Lender's holding company could have
achieved but for such Change in Law (taking into consideration such Lender's
policies and the policies of such Lender's holding company with respect to
capital adequacy), then from time to time the Borrowers will pay to such Lender,
within ten Business Days following a demand therefor accompanied by the
certificate referred to in paragraph (c) below, such additional amount or
amounts as will compensate such Lender or such Lender's holding company for any
such reduction suffered.  It is acknowledged that this Agreement is being
entered into by the Lenders on the understanding that the Lenders will not be
required to maintain capital against their Commitments under currently
applicable laws, regulations and regulatory guidelines.  In the event Lenders
shall be advised by any Governmental Authority or shall otherwise determine on
the basis
<PAGE>

                                                                              32

of pronouncements of any Governmental Authority that such understanding is
incorrect, it is agreed that a Change in Law will be deemed to have occurred and
that the Lenders will be entitled to make claims under this paragraph based upon
market requirements prevailing on the date hereof for commitments under
comparable credit facilities against which capital is required to be maintained.

          (c)  A certificate of a Lender setting forth the amount or amounts
necessary to compensate such Lender or its holding company, as the case may be,
as specified in paragraph (a) or (b) of this Section, together with supporting
documentation or computations, shall be delivered to the Borrowers and shall be
conclusive absent manifest error.  The Borrowers shall pay such Lender the
amount shown as due on any such certificate within 10 Business Days after
receipt thereof.

          (d)  Failure or delay on the part of any Lender to demand compensation
pursuant to this Section shall not constitute a waiver of such Lender's right to
demand such compensation; provided that the Borrowers shall not be required to
compensate a Lender pursuant to this Section for any increased costs or
reductions incurred more than 90 days prior to the date that such Lender
notifies the Borrowers of the Change in Law giving rise to such increased costs
or reductions and of such Lender's intention to claim compensation therefor;
provided further that, if the Change in Law giving rise to such increased costs
or reductions is retroactive, then the 90-day period referred to above shall be
extended to include the period of retroactive effect thereof.

          SECTION 2.14.  Break Funding Payments. In the event of (a) the payment
of any principal of any Eurodollar or Fixed Rate Loan other than on the last day
of an Interest Period applicable thereto (including as a result of an Event of
Default), (b) the conversion of any Eurodollar Revolving Loan other than on the
last day of the Interest Period applicable thereto, (c) the failure to borrow,
convert, continue or prepay any Eurodollar or Fixed Rate Loan on the date
specified in any notice delivered pursuant hereto (regardless of whether such
notice may be revoked under Section 2.07(d) or 2.09 and is revoked in accordance
therewith), (d) the failure to borrow any Competitive Loan after acceptance of
the Competitive Bid to make such Loan or (e) the assignment of any Eurodollar or
Fixed Rate Loan other than on the last day of the Interest Period applicable
thereto as a result of a request by the Borrowers pursuant to Section 2.17,
then, in any such event, the Borrowers shall compensate each Lender for the
loss, cost and expense attributable to such event (which loss, cost or expense
will not be deemed to include lost profit). In the case of a Eurodollar or Fixed
Rate Loan, such loss, cost or expense to any Lender shall be deemed to include
an amount determined by such Lender to be the excess, if any, of (i) the amount
of interest which would have accrued on the principal amount of such Loan had
such event not occurred, at the Adjusted LIBO Rate or LIBO Rate (without adding
thereto the Applicable Rate or the Margin, as the case may be) that would have
been applicable to such Loan, for the period from the date of such event to the
last day of the then current Interest Period therefor (or, in the case of a
failure to borrow, convert or continue, for the period that would have been the
Interest Period for such Loan), over (ii) the amount of interest which would
accrue on such principal amount for such period at the interest rate which such
Lender would bid were it to bid, at the commencement of such period, for
deposits of a comparable amount and period from other banks in the eurodollar
market or, in the case of Fixed Rate Loans, other market. A certificate of any
Lender setting forth any amount or amounts that such Lender is entitled to
receive pursuant to this Section, together
<PAGE>

                                                                              33

with supporting documentation or computations, shall be delivered to the
Borrowers and shall be conclusive absent manifest error. The Borrowers shall pay
such Lender the amount shown as due on any such certificate within 10 Business
Days after receipt thereof.

          SECTION 2.15.  Taxes.  (a) Any and all payments by or on account of
any obligations of the Borrowers hereunder or under any other Loan Document
shall be made free and clear of and without deduction for any Indemnified Taxes
or Other Taxes; provided that if a Borrower shall be required to deduct any
Indemnified Taxes or Other Taxes from such payments, then (i) the sum payable
shall be increased as necessary so that after making all required deductions of
Indemnified Taxes or Other Taxes (including deductions applicable to additional
sums payable under this Section) the Agent or Lender (as the case may be)
receives an amount equal to the sum it would have received had no such
deductions been made, (ii) such Borrower shall make such deductions and (iii)
such Borrower shall pay the full amount deducted to the relevant Governmental
Authority in accordance with applicable law.

          (b)  In addition, the Borrowers shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

          (c)  The Borrowers shall indemnify each Agent and each Lender, within
10 Business Days after written demand therefor, for the full amount of any
Indemnified Taxes or Other Taxes paid by such Agent or such Lender on or with
respect to any payment by or on account of any obligation of the Borrowers
hereunder or under any other Loan Document (including Indemnified Taxes or Other
Taxes imposed or asserted on or attributable to amounts payable under this
Section) and any penalties, interest and reasonable expenses arising therefrom
or with respect thereto, whether or not such Indemnified Taxes or Other Taxes
were correctly or legally imposed or asserted by the relevant Governmental
Authority.  A certificate setting forth in reasonable detail the amount and
nature of such payment or liability delivered to the Borrowers by a Lender, or
by an Agent on its own behalf or on behalf of a Lender, shall be conclusive
absent manifest error.

          (d)  As soon as practicable after any payment of Indemnified Taxes or
Other Taxes by the Borrowers to a Governmental Authority, the Borrowers shall
deliver to the Payment Agent the original or a certified copy of a receipt
issued by such Governmental Authority evidencing such payment, a copy of the
return reporting such payment or other evidence of such payment reasonably
satisfactory to the Payment Agent.

          (e)  Any Foreign Lender that is entitled to an exemption from or
reduction of withholding tax under the law of the jurisdiction in which a
Borrower is located, or any treaty to which such jurisdiction is a party, with
respect to payments under this Agreement shall deliver to the Borrowers (with
copies to the Co-Administrative Agents), at the time or times prescribed by
applicable law, such properly completed and executed documentation prescribed by
applicable law or reasonably requested by the Borrowers as will permit such
payments to be made without withholding or at a reduced rate.

          (f)  If an Agent or a Lender determines in good faith, that it has
received a refund of any Taxes or Other Taxes as to all or a portion of which it
has been indemnified by a Borrower
<PAGE>

                                                                              34

or with respect to all or a portion of which a Borrower has paid additional
amounts pursuant to this Section 2.15, it shall pay over such refund to such
Borrower (but only to the extent of indemnity payments made, or additional
amounts paid, by such Borrower under this Section 2.15 with respect to the Taxes
or Other Taxes giving rise to such refund), net of all out-of-pocket expenses of
such Agent or such Lender and without interest (other than any interest paid by
the relevant Governmental Authority with respect to such refund); provided, that
such Borrower, upon the request of such Agent or such Lender, agrees to repay
the amount paid over to such Borrower (plus any penalties, interest or other
charges imposed by the relevant Governmental Authority) to such Agent or such
Lender in the event such Agent or such Lender is required to repay such refund
to such Governmental Authority. This Section shall not be construed to require
any Agent or any Lender to make available its tax returns (or any other
information relating to its taxes which it deems confidential) to any Borrower
or any other Person.

          SECTION 2.16.  Payments Generally; Pro Rata Treatment; Sharing of
Setoffs. (a) Each Borrower shall make each payment required to be made by it
hereunder or under any other Loan Document (whether of principal, interest or
fees, or of amounts payable under Section 2.13, 2.14 or 2.15, or otherwise)
prior to 2:00 p.m., New York City time, on the date when due, in immediately
available funds, without setoff or counterclaim. Any amounts received after such
time on any date may, in the discretion of the Payment Agent, be deemed to have
been received on the next succeeding Business Day for purposes of calculating
interest thereon. All such payments shall be made to the Payment Agent at its
offices at 270 Park Avenue, New York, New York, except that payments pursuant to
Sections 2.13, 2.14, 2.15 or 10.03 shall be made directly to the Persons
entitled thereto. The Payment Agent shall distribute any such payments received
by it for the account of any other Person to the appropriate recipient promptly
following receipt thereof. If any payment under any Loan Document shall be due
on a day that is not a Business Day, the date for payment shall be extended to
the next succeeding Business Day, and, in the case of any payment accruing
interest, interest thereon shall be payable for the period of such extension.
All payments hereunder shall be made in Dollars. Any payment required to be made
by the Payment Agent hereunder shall be deemed to have been made by the time
required if the Payment Agent shall, at or before such time, have taken the
necessary steps to make such payment in accordance with the regulations or
operating procedures of the clearing or settlement system used by the Payment
Agent to make such payment.

          (b)  If at any time insufficient funds are received by and available
to the Payment Agent to pay fully all amounts of principal, interest and fees
then due hereunder, such funds shall be applied (i) first, towards payment of
interest and fees then due hereunder, ratably among the parties entitled thereto
in accordance with the amounts of interest and fees then due to such parties,
and (ii) second, towards payment of principal then due hereunder, ratably among
the parties entitled thereto in accordance with the amounts of principal then
due to such parties.

          (c)  If any Lender shall, by exercising any right of set off or
counterclaim or otherwise, obtain payment in respect of any principal of or
interest on any of its Loans resulting in such Lender receiving payment of a
greater proportion of the aggregate amount of its Loans and accrued interest
thereon than the proportion received by any other Lender, then the Lender
receiving such greater proportion shall purchase (for cash at face value)
participations in the Loans of other Lenders to the extent necessary so that the
benefit of all such payments shall be shared by
<PAGE>

                                                                              35

the Lenders ratably in accordance with the aggregate amount of principal of and
accrued interest on their respective Loans; provided that (i) if any such
participations are purchased and all or any portion of the payment giving rise
thereto is recovered, such participations shall be rescinded and the purchase
price restored to the extent of such recovery, without interest, and (ii) the
provisions of this paragraph shall not be construed to apply to any payment made
by a Borrower pursuant to and in accordance with the express terms of this
Agreement or any payment obtained by a Lender as consideration for the
assignment of or sale of a participation in any of its Loans to any assignee or
participant, other than to a Borrower or any Subsidiary or Affiliate thereof (as
to which the provisions of this paragraph shall apply). Each Borrower consents
to the foregoing and agrees, to the extent it may effectively do so under
applicable law, that any Lender acquiring a participation pursuant to the
foregoing arrangements may exercise against such Borrower's rights of setoff and
counterclaim with respect to such participation as fully as if such Lender were
a direct creditor of such Borrower in the amount of such participation.

          (d)  Unless the Payment Agent shall have received notice from the
applicable Borrower prior to the date on which any payment is due to the Payment
Agent for the account of the Lenders hereunder that such Borrower will not make
such payment, the Payment Agent may assume that such Borrower has made such
payment on such date in accordance herewith and may, in reliance upon such
assumption, distribute to the Lenders, the amount due.  In the event, if such
Borrower has not in fact made such payment, then each of the Lenders severally
agrees to repay to the Payment Agent forthwith on demand the amount so
distributed to such Lender with interest thereon, for each day from and
including the date such amount is distributed to it to but excluding the date of
payment to the Payment Agent, at the greater of the Federal Funds Effective Rate
and a rate determined by the Payment Agent in accordance with banking industry
rules on interbank compensation.

          (e)  If any Lender shall fail to make any payment required to be made
by it pursuant to Section 2.05(b) or 2.16(d), then the Payment Agent may, in its
discretion (notwithstanding any contrary provision hereof), apply any amounts
thereafter received by the Payment Agent for the account of such Lender to
satisfy such Lender's obligations under such Sections until all such unsatisfied
obligations are fully paid.

          SECTION 2.17.  Mitigation Obligations; Replacement of Lenders. (a) If
any Lender requests compensation under Section 2.13, or if a Borrower is
required to pay any additional amount to any Lender or any Governmental
Authority for the account of any Lender pursuant to Section 2.15; then such
Lender shall use reasonable efforts (consistent with its internal policy and
legal and regulatory restrictions) to designate a different lending office for
funding or booking its Loans hereunder or to assign its rights and obligations
hereunder to another of its offices, branches or affiliates if, in the
reasonable judgment of such Lender, such designation or assignment (i) would
eliminate or reduce amounts payable pursuant to Section 2.13 or 2.15 as the case
may be, in the future and (ii) would not subject such Lender to any unreimbursed
cost or expense and would not otherwise be disadvantageous to such Lender. Each
Borrower hereby agrees, jointly and severally to pay all reasonable costs and
expenses incurred by any Lender in connection with any such designation or
assignment.
<PAGE>

                                                                              36

          (b)  If any Lender requests compensation under Section 2.13, or if a
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.15,
or if any Lender defaults in its obligation to fund Loans hereunder, then the
Borrowers may upon notice to such Lender and the Payment Agent, require such
Lender to assign and delegate, without recourse, all its interests, rights and
obligations under this Agreement (other than any outstanding Competitive Loans
held by it) to an assignee that shall assume such obligations (which assignee
may be another Lender if a Lender accepts such assignment); provided that (i)
the Borrowers shall have received the prior written consent of the Payment Agent
to the identity of the assignee (if not then a Lender), which consent shall not
unreasonably be withheld or delayed and (ii) such Lender shall have received
payment of an amount equal to the outstanding principal of its Revolving Loans,
accrued interest thereon, accrued fees and all other amounts payable to it
hereunder, from the assignee (to the extent of such outstanding principal and
accrued interest and fees) or the Borrowers (in the case of all other amounts).

                                  ARTICLE III

                        Representations and Warranties

          Each of the Borrowers represents and warrants to the Lenders that:

          SECTION 3.01.  Corporate Existence.  Each Borrower and each Material
Subsidiary:  (a) is a business entity duly organized, validly existing and in
good standing under the laws of the jurisdiction of its organization; (b) has
all requisite corporate or other power, and has all material governmental
licenses, authorizations, consents and approvals, necessary to own its assets
and carry on its business as now being conducted; and (c) is qualified to do
business and is in good standing in all jurisdictions in which the failure to so
qualify could reasonably be expected to have a Material Adverse Effect.

          SECTION 3.02.  Certain Financial Information. (a) Financial Condition
of Northrop Operating. The consolidated statement of financial position of
Northrop Operating and its subsidiaries (i) as at December 31, 1999, and the
related consolidated statements of operations, changes in shareholders' equity
and cash flows of Northrop Operating and its subsidiaries for the fiscal year
ended on said date, with the opinion thereon of Deloitte & Touche LLP, and (ii)
as at September 30, 2000, and the respective related consolidated statements of
operations, changes in stockholders' equity and cash flows of Northrop Operating
and its subsidiaries for the fiscal quarter and portion of the fiscal year then
ended, certified by the chief financial officer of Northrop Operating, in each
case as heretofore furnished to each of the Lenders, are complete and present
fairly, in all material respects, the consolidated financial condition of
Northrop Operating and its subsidiaries as at said dates and the consolidated
results of their operations for such periods, all in accordance with GAAP
applied on a consistent basis, subject to year-end audit adjustments and the
absence of footnotes in the case of the statements referred to in clause (ii)
above. Neither Northrop Operating nor any of its subsidiaries had on said dates
any material contingent liabilities, liabilities for taxes, unusual forward or
long-term commitments or unrealized or anticipated losses from any unfavorable
commitments, except as referred to or reflected or provided for in said
statements of financial position as at said dates. Except as expressly disclosed
in writing to the Lenders prior to
<PAGE>

                                                                              37

the date hereof, since December 31, 1999, there has been no material adverse
change in the consolidated financial condition or operations, or the prospects
or business, taken as a whole, of Northrop Operating and its subsidiaries from
that set forth in said financial statements as at said date.

          (b)  Financial Condition of Litton Operating. The consolidated
statement of financial position of Litton Operating and its subsidiaries (i) as
at July 31, 2000, and the respective related consolidated statements of income,
stockholders' equity and cash flows of Litton Operating and its subsidiaries for
the period ended on such date, with the opinion thereon of Deloitte & Touche
LLP, and (ii) as at October 31, 2000, and the related consolidated statements of
income, stockholders' equity and cash flows of Litton Operating and its
subsidiaries for the fiscal quarter and portion of the fiscal year then ended,
certified by the chief financial officer of Litton Operating, in each case as
heretofore furnished to each of the Lenders, are complete and present fairly, in
all material respects, the consolidated financial condition of Litton Operating
and its subsidiaries as at said dates and the consolidated results of their
operations for such periods, all in accordance with GAAP applied on a consistent
basis, subject to year-end audit adjustments and the absence of footnotes in the
case of the statements referred to in clause (ii) above, except, in each case,
for matters not known to the Company or Northrop Operating that would not,
individually or in the aggregate, be material and adverse to the consolidated
financial condition or operations, or the prospects or business, of the Company
and the Subsidiaries (including Litton Operating and its subsidiaries) taken as
a whole, giving pro forma effect to the Transactions. As of the date hereof,
except as expressly disclosed in writing to the Lenders prior to the date
hereof, since July 31, 2000, there has been no material adverse change in the
consolidated financial condition or operations, or the prospects or business,
taken as a whole, of Litton Operating and its subsidiaries from that set forth
in said financial statements as at July 31, 2000.

          (c)  Projections. The Company has heretofore furnished to each of the
Lenders projected consolidated financial statements of the Company and the
Subsidiaries (including Litton Operating), on an annual basis through and
including 2007. Such projected financial statements set forth projected
consolidated balance sheets of the Company and such Subsidiaries and projected
consolidated statements of operations, changes in stockholders' equity and cash
flows of the Company and such Subsidiaries (giving effect to the Acquisition and
the related financing thereof, as if they had occurred on January 1, 2001) for
the respective fiscal periods covered thereby. Such projected financial
statements are based upon assumptions believed by the Company to be reasonable
as of the date hereof (it being understood that such projections are subject to
uncertainty).

          SECTION 3.03.  Litigation. There are no legal or arbitral proceedings
or any proceedings by or before any Governmental Authority, now pending or (to
the knowledge of any of the Borrowers) threatened against the Company or any
Material Subsidiary which, if adversely determined, would be reasonably likely
to result in any Material Adverse Effect, except as heretofore disclosed to the
Lenders in Northrop Operating's Annual Report on Form 10-K for the year ended
December 31, 1999, Litton Operating's Annual Report on Form 10-K for the year
ended July 31, 2000, Northrop Operating's Quarterly Reports on Form 10-Q for the
quarters ended March 31, June 30 and September 30, 2000 and Litton Operating's
Quarterly Reports on
<PAGE>

                                                                              38

Form 10-Q for the quarters ended January 31, April 30, and October 31, 2000,
copies of which have been furnished to the Lenders, or in Schedule 3.03.

          SECTION 3.04.  No Breach.  Except as expressly disclosed in writing to
the Lenders on or before the date hereof, none of the Transactions will conflict
with or result in a breach of, or require any consent under, the charters or by-
laws of any of the Borrowers, or any applicable law or regulation, or any order,
writ, injunction or decree of any court or Governmental Authority, or any
material agreement or instrument to which the Company or any Material Subsidiary
(including Litton Operating and any of its subsidiaries that are Material
Subsidiaries) is a party or by which any of them is bound or to which any of
them is subject, or constitute a material default under any such material
agreement or instrument, or result in the creation or imposition of any Lien
upon any of the revenues or assets of the Company or any such Subsidiary
pursuant to the terms of any such material agreement or instrument.

          SECTION 3.05.  Corporate Action.  Each of the Borrowers has all
necessary corporate power and authority to execute, deliver and perform its
obligations under the Loan Documents and, in the case of the Borrower, to borrow
the Loans hereunder; and the execution, delivery and performance by each of the
Borrowers of the Loan Documents and the borrowing of the Loans hereunder have
been duly authorized by all necessary corporate action on its part; and this
Agreement has been duly and validly executed and delivered by each of the
Borrowers and constitutes, and each of the other Loan Documents (assuming in the
case of any promissory notes issued hereunder, execution and delivery thereof
for value) will constitute, legal, valid and binding obligations of each of the
Borrowers, enforceable in accordance with its terms, except as such
enforceability may be limited by (a) bankruptcy, insolvency, reorganization,
moratorium or other similar laws of general applicability affecting the
enforcement of creditors' rights and (b) the application of general principles
of equity (regardless of whether such enforceability is considered in a
proceeding in equity or at law).

          SECTION 3.06.  Approvals. No authorizations, approvals, consents or
licenses of, and no filings or registrations with, any Governmental Authority
are necessary to authorize or are necessary in connection with (i) the
execution, delivery and performance of any Loan Document or the Merger
Agreement, (ii) the legality, validity, binding effect or enforceability of any
Loan Document or the Merger Agreement or (iii) the borrowing of the Loans
hereunder or the consummation of the other Transactions, in each case other than
those which have been or concurrently with the effectiveness hereof shall be
duly obtained, given or made, except consents of the Government set forth in
Schedule 3.06, which are required with respect to the transfer to Northrop
Operating of contracts between Litton Operating or its subsidiaries and the
Government and which none of the Borrowers has any reason to believe will not be
obtained in due course.

          SECTION 3.07.  Use of Proceeds, Etc. Neither the making of any Loan
hereunder, nor the use of the proceeds thereof, will violate the provisions of
Regulation U or X of the Board of Governors of the Federal Reserve System and no
part of the proceeds of any Loan will be used to purchase or carry any Margin
Stock in violation of Regulation U or X or to extend credit for the purpose of
purchasing or carrying any Margin Stock in violation of Regulation U or X.
Neither the Company nor any of the Subsidiaries is engaged principally, or as
one of its
<PAGE>

                                                                              39

primary activities, in the business of extending credit for the purpose of
purchasing or carrying Margin Stock.

          SECTION 3.08.  ERISA. Each of the Company and the ERISA Affiliates has
fulfilled its obligations under the minimum funding standards of ERISA and the
Code with respect to each Plan, is in compliance in all material respects with
the applicable provisions of ERISA and the Code and has not incurred any
liability to the PBGC or any Plan or Multiemployer Plan (other than a liability
to make payments or contributions in the ordinary course of business). No
Termination Event has occurred and is continuing.

          SECTION 3.09.  Taxes.  United States Federal income tax returns of
Northrop Operating and its subsidiaries and Litton Operating and its
subsidiaries have been filed through 1999 and examined and reported on by the
Internal Revenue Service or closed by applicable statutes and satisfied through
the fiscal year of Northrop Operating ended December 31, 1991 and the fiscal
year of Litton Operating ended October 31, 1985, respectively.  Each of Northrop
Operating and its subsidiaries, and Litton Operating and its subsidiaries has
filed all United States Federal and State income tax returns which are required
to be filed by it and has paid all taxes due pursuant to such returns or
pursuant to any assessment received by Northrop Operating and its subsidiaries,
or Litton Operating and its subsidiaries, to the extent that such taxes have
become due (except as to such taxes which are being contested in good faith by
appropriate proceedings). The charges, accruals and reserves on the books of the
Company and the Subsidiaries in respect of taxes and other governmental charges
are, in the opinion of each of the Borrowers, adequate. The California Franchise
tax returns of Northrop Operating have been examined and reported on by the
California Franchise Tax Board or closed by applicable statutes and satisfied
for all fiscal years prior to, and including, the fiscal year ended December 31,
1999.

          SECTION 3.10.  Funded Debt. As of the Effective Date, after giving
effect to the Transactions, no default exists under the provisions of any
instrument evidencing Funded Debt in an outstanding principal amount in excess
of $50,000,000 or of any agreement relating thereto.

          SECTION 3.11.  Properties. The Company has, and each of the Material
Subsidiaries has, good and marketable title to its respective material
properties and assets, including the properties and assets reflected in the
balance sheet as at December 31, 1999 herein above described in Section 3.02 (a)
(other than Properties disposed of in the ordinary course of business), subject
to no Lien of any kind except Liens permitted by Section 6.05.

          SECTION 3.12.  Environmental Matters. (a) Except as disclosed in
Northrop Operating's Annual Report on Form 10-K for the fiscal year ended
December 31, 1999 and Litton Operating's Annual Report on Form 10-K for the
fiscal year ended July 31, 2000, neither the Company nor any Subsidiary
(including Litton Operating and its subsidiaries) (i) has received notice or
otherwise obtained knowledge of any claim, demand, action, event, condition,
report or investigation indicating or concerning any potential or actual
liability which, individually or in the aggregate, could reasonably be expected
to have a Material Adverse Effect arising in connection with: (1) any non-
compliance with or violation of the requirements of any applicable Federal,
state and local environmental health and safety statutes and regulations or (2)
the release or threatened release of toxic or hazardous waste, substance or
constituent, or other substance into the
<PAGE>

                                                                              40

environment, (ii) to the best knowledge of each of the Borrowers, has any
threatened or actual liability in connection with the release or threatened
release of any toxic or hazardous waste, substance or constituent, or other
substance into the environment which, individually or in the aggregate, could
reasonably be expected to have a Material Adverse Effect, (iii) has received
notice or otherwise obtained knowledge of any Federal or state investigation
evaluating whether any remedial action is needed to respond to a release or
threatened release of any toxic or hazardous waste, substance or constituent or
other substance into the environment for which the Company or any such
Subsidiary, is or may be liable, which remedial action would have a Material
Adverse Effect or (iv) has received notice that the Company or any such
Subsidiary, is or may be liable to any Person under the Comprehensive
Environmental Response, Compensation, and Liability Act, as amended, 42 U.S.C.
(S)9601 et seq. ("CERCLA"), or any analogous state law, which liability would
have a material Adverse Effect.

          (b)  Each of the Company and each Subsidiary (including Litton
Operating and each of its subsidiaries) is in compliance in all material
respects with the financial responsibility requirements of all Environmental
Laws, including, those contained in 40 C.F.R., Parts 264 and 265, Subpart H, and
any similar state law requirements.

          SECTION 3.13.  True and Complete Disclosure. All factual information
(taken as a whole) furnished on or before the Effective Date by or on behalf of
the Company or the Subsidiaries in writing to any Co-Administrative Agent or
Lender (including, all factual information contained in the Information
Memorandum) for purposes of or in connection with this Agreement or any
transaction contemplated herein is, and all other such factual information
(taken as a whole) furnished after the Effective Date by or on behalf of the
Company or the Subsidiaries in writing to the Co-Administrative Agents or any
Lender will be, true and accurate in all material respects on the date as of
which such information is dated or certified and not incomplete by omitting to
state any material fact necessary to make such information (taken as a whole)
not misleading at such time in light of the circumstances under which such
information was provided. There is no fact known to any of the Borrowers which
has, or is reasonably likely to have, a Material Adverse Effect which has not
been disclosed herein or in such other documents, certificates and statements
furnished to the Lenders for use in connection with the transactions
contemplated hereby.

          SECTION 3.14.  Acquisition.  On and as of the Effective Date, all
material consents and approvals of, and filings and registrations with, and all
other actions in respect of, all Governmental Authorities required in order to
make or consummate the Acquisition, or otherwise required in connection with the
Acquisition, will have been obtained, given, filed or taken and are or will be
in full force and effect (or effective judicial relief with respect thereto will
have been obtained) (except with respect to any vote of the stockholders of
Litton Operating that may be required to effect the Litton Merger, in the event
that less than 90% of the outstanding common stock of Litton Operating shall
have been acquired by Litton Merger Sub in the Exchange Offer).  All actions
pursuant to or in furtherance of the Acquisition have been and will be taken in
compliance with all applicable laws.
<PAGE>

                                                                              41

                                  ARTICLE IV

                                  Conditions

          SECTION 4.01.  Effective Date. The obligations of the Lenders to make
Loans hereunder shall not become effective until the date on which each of the
following conditions is satisfied (or waived in accordance with Section 10.02 or
provided for, in the case of the conditions set forth in paragraphs (a), (b),
(c) and (e) below insofar as they relate to Litton Operating, in the manner
described in Section 10.14):

          (a)  Execution of Agreement.  The Co-Administrative Agents (or their
               -----------------------
counsel) shall have received from each party hereto (including Litton Operating,
as provided in Section 10.14) either (i) a counterpart of this Agreement signed
on behalf of such party or (ii) written evidence satisfactory to the Co-
Administrative Agents (which may include telecopy transmission of a signed
signature page of this Agreement) that such party has signed a counterpart of
this Agreement.

          (b)  Corporate Documents.  Certified copies of the certificates of
               --------------------
incorporation and the by-laws of each of the Borrowers and of all corporate
action taken by each of the Borrowers approving each Loan Document and the
borrowings by the Borrowers hereunder (including, a certificate setting forth
the resolutions of the Board of Directors of each of the Borrowers adopted in
respect of the transactions contemplated thereby).

          (c)  Incumbency Certificate.  A certificate of the Secretary of each
               -----------------------
of the Borrowers, dated the Effective Date, in respect of the incumbency and
specimen signature of each of the officers (i) who is authorized to sign the
Loan Documents on such Borrower's behalf and (ii) who will, until replaced by
another officer or officers duly authorized for that purpose, act as such
Borrower's representative for the purposes of signing documents and giving
notices and other communications in connection with the Loan Documents and the
transactions contemplated thereby.  The Co-Administrative Agents and each of the
Lenders may conclusively rely on such certificates until it receives notice in
writing from the applicable Borrower to the contrary.

          (d)  Officer's Certificate.  A certificate of a senior officer of the
               ----------------------
Company, dated the Effective Date, to the effect set forth in clauses (a) and
(b) of Section 4.02 hereof (after giving effect to the consummation of the
Acquisition).

          (e)  Opinions.  (i)  An opinion of Sheppard, Mullin, Richter & Hampton
               ---------
LLP, counsel for the Company and Northrop Operating, dated the Effective Date,
substantially in the form of Exhibit B-1 hereto, (ii) an opinion of John Mullan,
Esq., Assistant General Counsel of Northrop Operating, dated the Effective Date,
substantially in the form of Exhibit B-2 hereto, (iii) an opinion of W. Burks
Terry, General Counsel of Litton Operating, dated the Effective Date,
substantially in the form of Exhibit B-3 hereto, (iv) an opinion of Kaye,
Scholer LLP, special New York counsel for the Borrowers, dated the Effective
Date, substantially in the form of Exhibit B-4 hereto (and each Borrower hereby
instructs each such counsel to deliver such opinions to the Lenders and the Co-
Administrative Agents).
<PAGE>

                                                                              42

          (f)  Promissory Notes.  To the extent requested by any Lenders,
               -----------------
promissory notes evidencing the Loans of such Lenders, duly completed and
executed and delivered.

          (g)  Merger Agreement.  (i)  A true and complete copy of the Merger
               -----------------
Agreement (which shall include copies of all amendments, schedules, exhibits and
other attachments thereto), together with true and complete copies of each
material document, certificate and opinion referred to in or delivered in
connection therewith, and (ii) a certificate of a senior officer of the Company,
dated the Effective Date, to the effect that (x) the Merger Agreement and all
related documentation have been duly executed and delivered by each of the
parties thereto and are in full force and effect on the Effective Date and (y)
the provisions of the Merger Agreement and such related documentation have not
been amended, waived or otherwise modified, or executed and delivered in forms
other than the forms delivered to the Co-Administrative Agents prior to the date
hereof.

          (h)  Consummation of the Exchange Offer.  A certificate of a senior
               -----------------------------------
officer of the Company, dated the Effective Date, to the effect that (i) the
Exchange Offer shall have been consummated and there shall have been validly
tendered thereunder and not withdrawn a majority of the capital stock of Litton
Operating, such that Litton Merger Sub would be able to consummate the Litton
Merger without the vote of any other stockholder of Litton Operating, in each
case in accordance with applicable law; (ii) all conditions to the consummation
of the Exchange Offer as set forth in the Merger Agreement have been (or will
concurrently be) fulfilled or waived by the parties thereto (which waiver, in
the case of any waiver by the Company or Northrop Operating, shall be given only
with the consent of the Lenders, and which conditions, in the case of conditions
to be fulfilled to the satisfaction of the Company or Northrop Operating, shall
be fulfilled to the satisfaction of the Co-Administrative Agents); and (iii) the
Northrop Merger shall have been consummated and Northrop Operating shall be a
Wholly Owned Subsidiary of the Company.

          (i)  Terms of Acquisition.  A certificate of a senior officer of the
               ---------------------
Company, dated the Effective Date, to the effect that (i) the cash portion of
the purchase price paid by the Company in the Acquisition will not exceed
$4,000,000,000 and (ii) the fees and expenses relating to the Acquisition will
be substantially consistent with the amount set forth in the table of sources
and uses heretofore furnished to the Co-Administrative Agents.

          (j)  Payment of Fees and Expenses.  Evidence that (i) all principal of
               -----------------------------
and interest on the loans under the Existing Credit Agreements and the
Refinanced Debt shall have been (or will concurrently be) paid in full and (ii)
all fees and expenses payable under the Existing Credit Agreements and the
Refinanced Debt accrued to the Effective Date and unpaid and all costs, fees and
expenses, and all other compensation contemplated by the Loan Documents and by
the Fee Letter dated January 29, 2001 among the Borrowers and the Co-
Administrative Agents (including, legal fees and expenses) shall have been (or
will concurrently be) paid by the Borrowers to the extent due.

          (k)  Senior Securities; Other Indebtedness and Preferred Stock.  After
               ----------------------------------------------------------
giving effect to the Transactions and the other transactions contemplated
hereby, the Company and its Subsidiaries shall have outstanding no Indebtedness
or preferred stock other than the Loans under the Loan Documents, Indebtedness
under Working Capital Credit Lines, Indebtedness under the Five-Year Credit
Agreement, the Senior Securities, the preferred stock issued by the Company in
<PAGE>

                                                                              43

connection with the Exchange Offer and any Indebtedness disclosed in [refer to
pro forma financial statements included in Exchange Offer documents].

          (l)  Litigation.  Except as set forth on Schedule 3.03, no litigation
               -----------
administrative or procedural action by any entity (private or governmental)
shall be pending or threatened against any of the Borrowers (a) with respect to
this Agreement or any other Loan Document, (b) that could reasonably be expected
to restrain, prevent or impose burdensome conditions on the Transactions or (c)
which the Required  Lenders shall reasonably determine would be likely to have a
Material Adverse Effect.

          (m)  Miscellaneous.  The Co-Administrative Agents shall have received
               --------------
such other documents as the Co-Administrative Agents or any Lender shall
reasonably have requested.

The Payment Agent shall promptly notify each Lender of the occurrence of the
Effective Date.

          SECTION 4.02. Initial and Subsequent Loans.  The obligation of any
Lender to make any Loan to the Borrowers upon the occasion of each borrowing
hereunder is subject to the further conditions precedent that, as of the date of
such Loan and after giving effect thereto:

          (a)  no Default shall have occurred and be continuing; and

          (b)  the representations and warranties made by the Borrowers in
     Article III hereof shall be true in all material respects on and as of the
     date of the making of such Loan with the same force and effect as if made
     on and as of such date (except to the extent such representations or
     warranties expressly relate to an earlier date, in which case they shall be
     true in all material respects as of such earlier date).

Each notice of or request for a Borrowing by a Borrower hereunder shall
constitute a certification by the Borrowers to the effect set forth in the
preceding sentence (both as of the date of such notice and, unless any of the
Borrowers otherwise notifies the Payment Agent prior to the date of such
borrowing, as of the date of such borrowing).

                                   ARTICLE V

                             Affirmative Covenants

          Until the Commitments have expired or been terminated and the
principal of and interest on each Loan and all fees payable hereunder shall have
been paid in full, each of the Borrowers covenants and agrees with the Lenders
as to itself and its subsidiaries that:

          SECTION 5.01.  Financial Statements.  The Company shall deliver to
each of the Lenders and to the Co-Administrative Agents:

          (a)  within 105 days after the end of each fiscal year of the Company,
     (i) a consolidated statement of financial position of the Company and the
     Subsidiaries as at the
<PAGE>

                                                                              44

     close of such fiscal year and consolidated statements of operations,
     changes in stockholders' equity and cash flows of the Company and the
     Subsidiaries for such year, certified by Deloitte & Touche LLP or by other
     independent public accountants selected by the Company and reasonably
     satisfactory to the Co-Administrative Agents and (ii) the Consolidating
     Financial Statements for such year;

          (b)  within 60 days after the end of each of the first three fiscal
     quarters of each fiscal year of the Company, (i) an unaudited consolidated
     statement of financial position of the Company and the Subsidiaries as at
     the end of such quarter and unaudited consolidated statements of
     operations, changes in stockholders' equity and cash flows of the Company
     and the Subsidiaries for such quarter and for the period from the beginning
     of the fiscal year to the end of such quarter, certified by an authorized
     financial or accounting officer of the Company and (ii) the Consolidating
     Financial Statements for such fiscal quarter;

          (c)  promptly upon becoming available, copies of all financial
     statements, reports, notices, proxy statements and final prospectuses sent
     by the Company to stockholders or by any of the Borrowers to the SEC;

          (d)  subject to Government restrictions, such other statement or
     statements of the position and affairs of the Company and of the
     Subsidiaries and the status of their contracts, open accounts and budgets
     or forecasts, and other financial information, as may be reasonably
     requested by the Co-Administrative Agents;

          (e)  with each of the audited financial statements required to be
     delivered under Section 5.01(a), a certificate by the independent public
     accountants certifying such statements to the effect that they are familiar
     with the provisions of this Agreement and that, in making the examination
     necessary for their opinion on such financial statements, nothing came to
     their attention that caused them to believe that the Company was not in
     compliance with this Agreement insofar as it relates to accounting matters
     or, if the contrary is the case, specifying the nature of such non-
     compliance;

          (f)  with each of the financial statements required to be delivered
     under Section 5.01(a) or Section 5.01(b), a statement by an authorized
     financial or accounting officer of the Company to the effect that no
     Default has occurred and is continuing, or if any Default has occurred and
     is continuing, describing such Default and the action taken or proposed to
     be taken by the Company with respect thereto, and a detailed computation,
     in form and substance satisfactory to the Co-Administrative Agents, of the
     financial calculations required in Sections 6.08, 6.09 and 6.10;

          (g)  (x) promptly after each of Moody's and S&P first either reaffirms
     or announces revised ratings for the Senior Long Term Debt after the
     consummation of the Acquisition and (y) thereafter, promptly after (1)
     either Moody's or S&P first announces or publishes a revised rating for the
     Senior Long Term Debt or (2) either Moody's or S&P ceases to rate the
     Senior Long Term Debt, notice thereof; and
<PAGE>

                                                                              45

          (h)  promptly after the Company knows or has reason to know that any
     Default has occurred, a notice of such Default describing the same in
     reasonable detail and, together with such notice or as soon thereafter as
     is reasonably practicable, a description of the action that the Company has
     taken or proposes to take with respect thereto in such detail as the
     Company reasonably believes to be appropriate.

For the purposes of this section, the Company's obligation to deliver the items
referred to in clauses (a), (b) and (c) above will be deemed satisfied by the
posting of such items on a web site to which the Lenders have access, and which
shall have been designated in a notice delivered to the Lenders and the Co-
Administrative Agents.

          SECTION 5.02.  Existence, Payment of Taxes, ERISA, Etc. Each Borrower
shall, and shall cause each of the Material Subsidiaries to:

          (a)  preserve and maintain its legal existence and all of its material
     rights, privileges, licenses and franchises (provided that nothing in this
     Section 5.02 shall prohibit any transaction expressly permitted under
     Section 6.02 or 6.04 hereof);

          (b)  comply in all material respects with the requirements of all
     applicable laws, rules, regulations and orders of governmental or
     regulatory authorities if failure to comply with such requirements is
     reasonably likely (either individually or in the aggregate) to have a
     Material Adverse Effect;

          (c)  promptly pay and discharge all taxes, assessments and
     governmental charges prior to the date on which material penalties attach
     thereto, but only to the extent that such taxes, assessments and charges
     shall not be contested in good faith and by appropriate proceedings by the
     Company or such Material Subsidiary; and

          (d)  maintain all of its Properties used or useful in its business in
     good working order and condition, ordinary wear and tear excepted.

          The Company shall furnish to the Payment Agent the following:

          (i)   As soon as possible and in any event within 30 days after the
     Company know or has reason to know that any Termination Event has occurred,
     a statement of a senior financial or accounting officer of the Company
     describing such Termination Event and the action, if any, which the Company
     proposes to take with respect thereto;

          (ii)  Promptly after receipt thereof by the Company, copies of each
     notice received from the PBGC of its intention to terminate any Plan or to
     have a trustee appointed to administer any Plan; and

          (iii) Promptly after request therefor, such other documents and
     information relating to any Plan as the Co-Administrative Agents may
     reasonably request from time to time.
<PAGE>

                                                                              46

          SECTION 5.03.  Notice of Litigation. The Company shall promptly give
notice in writing to the Co-Administrative Agents (which shall promptly notify
the Lenders) of any litigation or proceeding against the Company or any
Subsidiary if in the opinion of the General Counsel of the Company (or any
individual acting in such capacity) such action or proceeding is reasonably
likely to have a Material Adverse Effect. Without limiting the generality of the
foregoing, the Company shall give notice in writing to the Co-Administrative
Agents (which will promptly notify each Lender) of the assertion of any claim by
any Person of violation of or non-compliance with any Environmental Laws
against, or with respect to the activities of, the Company or any Subsidiary,
and notice of any alleged violation of or non-compliance with any Environmental
Laws or any permits, licenses or authorizations under Environmental Laws if in
the opinion of the General Counsel of the Company (or any individual acting in
such capacity) such claim or violation or non-compliance is reasonably likely
(either individually or in the aggregate) to have a Material Adverse Effect.

          SECTION 5.04.  Insurance. The Company shall maintain, and cause each
Subsidiary to maintain, insurance with responsible companies in such amounts and
against such risks as is usually carried by owners of similar businesses and
Property in the same general area in which the Company or such Subsidiary
operates, including reasonable war, comprehensive and commercial risk insurance,
when and if available, subject to such deductibles, receptions and self
insurance programs as the Company deems appropriate.

           SECTION 5.05. Access to Books and Properties.  The Company shall:

          (a)  keep adequate records and books of account, in which complete
     entries will be made in accordance with GAAP consistently applied; and

          (b)  as may be reasonably requested, give any representatives of the
     Lenders reasonable access, subject to restrictions imposed by Governmental
     Authorities and customer confidentiality agreements, during normal business
     hours to, and permit them to examine, copy or make extracts from, any and
     all books, records and documents in the possession of the Company or any
     Subsidiary relating to its affairs and to inspect any Properties of the
     Company or any Subsidiary.

          SECTION 5.06.  Ratings by Moody's and S&P. The Company will at all
times use commercially reasonable efforts to cause Moody's and S&P (or, if
applicable, a Substitute Rating Agency) to have in effect ratings for the Senior
Long Term Debt.

          SECTION 5.07.  Consummation of Merger. The Company will cause (a) the
Northrop Merger to be consummated on or prior to the Effective Date and (b) the
Litton Merger to be consummated as promptly as practicable following the
Effective Date.

                                  ARTICLE VI

                              Negative Covenants
<PAGE>

                                                                              47

          Until the Commitments have expired or terminated and the principal of
and interest on each Loan and all fees payable hereunder have been paid in full
each of the Borrowers covenants and agrees with the Lenders as to itself and its
subsidiaries that:

          SECTION 6.01.  Restricted Payments. The Company shall not declare, pay
or authorize any Restricted Payment if (a) any such Restricted Payment is not
paid out of Consolidated Net Income Available for Restricted Payments, (b) at
the time of, and immediately after, the making of any such Restricted Payment
(or the declaration of any dividend except a stock dividend) a Default has
occurred and remains continuing or (c) the making of any such Restricted Payment
would cause the Leverage Ratio to exceed the percentage which the Company will
be required to maintain as of the next Fiscal Date pursuant to Section 6.08.

          SECTION 6.02.  Asset Dispositions. The Company shall not, and shall
not permit any of its Subsidiaries to, sell, transfer, lease or otherwise
dispose of any asset, including any Equity owned by it in any other Person, nor
shall the Company permit any of its Subsidiaries to issue any additional Equity
in such Subsidiary, except:

          (a)  sales of inventory, used or surplus equipment, surplus real
     estate and Permitted Investments in the ordinary course of business;

          (b)  sales, transfers and dispositions to the Company or a Subsidiary;

          (c)  sales, transfers and dispositions for which the Company and the
     Subsidiaries receive consideration with a value of less than $10,000,000 in
     the aggregate for any individual transaction or series of related
     transactions; and

          (d)  sales, transfers and other dispositions of assets (other than
     Equity in a Subsidiary) that are not permitted by any other clause of this
     Section; provided that the aggregate fair market value of all assets sold,
     transferred or otherwise disposed of in reliance upon this clause (d) after
     the date hereof shall not exceed 20% of the consolidated assets of the
     Company as at December 31, 2000, after giving pro forma effect to the
     Transactions;

provided that all sales, transfers, leases and other dispositions permitted
under clauses (a) and (d) of this Section (other than those resulting in the
receipt by the Company and the Subsidiaries of consideration with a fair market
value of less than $25,000,000 in the aggregate for any individual transaction
or series of related transactions) shall be made for fair value.

          SECTION 6.03.  Guarantees. The Company shall not, and shall not permit
any Subsidiary to, Guarantee any obligation of any Person, or suffer to exist
any such Guarantee, except that:

          (a)  the Company may Guarantee any obligation of any Subsidiary;

          (b)  any Subsidiary may Guarantee any obligation of the Company or any
     other Subsidiary; and
<PAGE>

                                                                              48

          (c)  the Company or any Subsidiary may issue a Guarantee of any
     obligation of a Person other than the Company or any Subsidiary, or assume
     an obligation of any such Person; provided that (i) the excess (if any) of
     (x) the aggregate amount of all obligations referred to in this clause (c)
     (to the extent said obligations do not otherwise constitute Funded Debt)
     over (y) 5% of Consolidated Shareholders' Equity shall be deemed Funded
     Debt for the purposes of this Agreement.

          SECTION 6.04.  Fundamental Changes and Acquisitions. The Company will
not, nor will it permit any of the Subsidiaries to, enter into any transaction
of merger or consolidation or amalgamation, or liquidate, wind up or dissolve
itself (or suffer any liquidation or dissolution). The Company will not, nor
will it permit any of the Subsidiaries to, acquire any business from or all or
any significant part of the Property of, or all or any significant part of the
capital stock of, or be a party to any acquisition of, any Person.

          Notwithstanding the foregoing:

          (a)  any Subsidiary may be merged or consolidated with or into:  (i)
     any Borrower if such Borrower shall be the continuing or surviving
     corporation or (ii) any other Subsidiary; provided that if any such
     transaction shall be between a Subsidiary and a Wholly-Owned Subsidiary,
     the Wholly-Owned Subsidiary shall be the continuing or surviving
     corporation;

          (b)  during any Investment Grade Rating Period, any Borrower or any
     Subsidiary may merge or consolidate with any other Person if (i) in the
     case of a merger or consolidation of any Borrower, such Borrower is the
     surviving corporation and, in any other case, the surviving corporation is
     a Wholly-Owned Subsidiary and (ii) after giving effect thereto no Default
     would exist;

          (c)  the Borrowers may consummate the Acquisition and the related
     Transactions; and

          (d)  the Company or any of the Subsidiaries may acquire the business
     of, or all or any significant part of the Property of, or all or any
     significant part of the capital stock of, or be a party to any acquisition
     of, any Person engaged in the same line of business as the Company and its
     Subsidiaries, taken as a whole, or a  related line of business (whether
     directly or through the merger of a Wholly-Owned Subsidiary with that
     Person) subject to the following:

               (i)  at the time of such acquisition, and after giving effect
          thereto, no Default shall exist; and

               (ii) if the sum of (A) the aggregate value of the consideration
          to be paid in such acquisition and (B) the aggregate value of the
          consideration paid in all prior acquisitions that shall have been
          completed since the most recent fiscal quarter end of the Company
          shall exceed $150,000,000, the Company shall have delivered a
          certificate of a senior accounting or financial officer of the Company
          to the
<PAGE>

                                                                              49

          Co-Administrative Agents prior to such acquisition demonstrating
          compliance with Sections 6.08, 6.09 and 6.10 on a pro forma basis as
          if such acquisition and all such prior acquisitions had occurred at
          the beginning of the most recently ended period of four consecutive
          fiscal quarters of the Company;

     provided that, during any period which is not an Investment Grade Rating
     Period, and notwithstanding the provisions of clause (i) above, the
     consideration for any such acquisition shall consist exclusively of Equity
     of the Company.

          SECTION 6.05.  Limitation on Liens. The Company shall not, and shall
not permit any Subsidiary to, create, assume or suffer to exist any Lien on any
of its Property, whether now owned or hereafter acquired, except:

          (a)  deposits or pledges to secure payments of workers' compensation,
     unemployment insurance, old age pensions or other social security, or in
     connection with or to secure the performance of bids, tenders, contracts
     (other than contracts for the repayment of borrowed money) or leases, or to
     secure statutory obligations or surety or appeal bonds, or other pledges or
     deposits for purposes of like nature in the ordinary and normal operation
     of its business;

          (b)  Liens created in favor of the United States of America or any
     department or agency thereof or any other contracting party or customer in
     connection with advance or progress payments or similar forms of vendor
     financing or incentive arrangements;

          (c)  mechanics', carriers', workers', repairmen's or other like Liens
     arising in the ordinary course of business in respect of obligations which
     are not overdue;

          (d)  Liens for taxes which at the particular time are not due, or
     remain payable without penalty, or which are being contested in good faith
     and by proper proceedings;

          (e)  Liens already existing on Property acquired after the date
     hereof, and securing obligations assumed in connection with a transaction
     permitted by Section 6.04 hereof (and not created in anticipation thereof);

          (f)  purchase money Liens on fixed assets (including trust deeds or
     first mortgages) given substantially concurrently with (or within 180 days
     after) the acquisition of the fixed assets and Liens existing on such fixed
     assets at the time of acquisition thereof, conditional sales agreements or
     other title retention agreements with respect to fixed assets hereafter
     acquired, and extensions and renewals of any of the same; provided that (i)
     the Indebtedness secured by any such Lien shall be reasonably related to
     the fair market value of the related asset acquired by the Company or a
     Subsidiary, as the case may be, and (ii) no such Lien shall extend to any
     Property other than that then being acquired; and

          (g)  Liens existing on the Effective Date, as set forth in Schedule
     6.05(g).
<PAGE>

                                                                              50

provided that the aggregate amount of Indebtedness or obligations (whether or
not assumed by the Company or a Subsidiary) secured by all Liens and agreements
permitted by clauses (e) and (f) of this Section 6.05 shall not at any time
exceed $375,000,000.

           SECTION 6.06.  Investments.  The Company shall not, and shall not
permit any Subsidiary to, make any Investment except:

          (a)  the Acquisition, and other acquisitions expressly permitted by
     Section 6.04;

          (b)  Investments existing on the date hereof in any Person;

          (c)  Permitted Investments;

          (d)  Investments made in the ordinary and normal operation of its
     business as presently conducted;

          (e)  reasonable advances to its subcontractors and suppliers in
     anticipation of deliveries;

          (f)  Investments in any Person or Persons, whether domestic or
     foreign, to the extent covered by Guarantees or insurance covering all
     political and credit risks issued by the Overseas Private Investment
     Corporation or another agency of the United States acceptable to the
     Administrative Agent or by an agency of a foreign government which is rated
     investment grade by Moody's or S&P; and

          (g)  other Investments in any Person or Persons, whether domestic or
     foreign, in amounts which do not exceed in the aggregate at any time
     outstanding 5% of the consolidated total assets of the Company and the
     Subsidiaries as at the last day of the most recently completed Quarterly
     Period, so long as the aggregate amount of Investments in Person(s) that
     are not Wholly-Owned Subsidiaries does not as at such day exceed 2% of the
     consolidated total assets of the Company and the Subsidiaries.
<PAGE>

                                                                              51

          SECTION 6.07.  Indebtedness. (a) The Company will not, nor will it
permit any of its Subsidiaries to, create, incur or suffer to exist any
Indebtedness except:

          (i)    Indebtedness to the Lenders hereunder and under the Five-Year
     Credit Agreement and unsecured Indebtedness replacing in whole or in part
     the facility established by this Agreement or by the Five-Year Credit
     Agreement; provided that (a) the Loans outstanding under this Agreement or
     the Five-Year Credit Agreement will be repaid, and the Commitments under
     such Agreements shall be reduced, by amounts equal to the aggregate net
     proceeds of such replacement Indebtedness at the time of the issuance
     thereof, (b) the weighted average life to maturity of such replacement
     Indebtedness shall not be less than that of the Indebtedness under this
     Agreement or the Five-Year Credit Agreement, as the case may be, and (c)
     the obligors in respect of any such replacement Indebtedness shall be
     limited to the Borrowers;

          (ii)   the Senior Securities and the Guarantees thereof by the Company
     and Litton Operating;

          (iii)  Indebtedness outstanding on the date hereof and reflected in
     Schedule 6.07, and refinancings and extensions of any thereof that do not
     increase the outstanding principal amount of such Indebtedness;

          (iv)   Subordinated Indebtedness;

          (v)    Indebtedness of (x) Subsidiaries to the Company to the extent
     the Company is permitted by Section 6.06 to make Investments in
     Subsidiaries, (y) Subsidiaries to other Subsidiaries or (z) the Company to
     Subsidiaries;

          (vi)   Guarantees permitted by Section 6.03;

          (vii)  Indebtedness under Working Capital Credit Lines, provided that
     the Working Capital Credit Lines of Subsidiaries other than Northrop
     Operating and Litton Operating shall be in an aggregate principal amount
     not greater than $300,000,000;

          (viii) Indebtedness in respect of letters of credit, banker's
     acceptances and similar instruments issued or accepted for the account of
     the Company or any Subsidiary in the ordinary course of its business;

          (ix)   Indebtedness issued pursuant to the Northrop Operating Senior
     Indenture or the Litton Operating Senior Indenture;

          (x)    Indebtedness under Interest Rate Protection Agreements
     permitted or required by Section 6.13;

          (xi)   Indebtedness under the Existing Credit Agreements and the
     Refinanced Debt, but only until the Effective Date; and
<PAGE>

                                                                              52

          (xii)  additional Indebtedness of the Company and the Subsidiaries
     (including Capital Lease Obligations and other Indebtedness secured by
     Liens permitted under clauses (e) and (f) of Section 6.05 hereof) up to but
     not exceeding $375,000,000 in the aggregate at any one time outstanding.

          (b)    The Borrowers will not permit the Indebtedness of all of the
Subsidiaries that are not Borrowers (other than Indebtedness owing to the
Company or another Subsidiary) to exceed $425,000,000 in the aggregate at any
one time outstanding.

          SECTION 6.08.  Leverage Ratio. The Company will not permit the
Leverage Ratio as of any Fiscal Date set forth below to exceed the percentage
set forth below opposite such Fiscal Date:

              Fiscal Date                          Percentage
              -----------                          ----------

     June 30, 2001                                   60.0%

     September 30, 2001                              60.0%

     December 31, 2001 and each Fiscal Date          57.5%
     thereafter

SECTION 6.09.  Funded Debt to Consolidated EBITDA Ratio.  The Company will not
permit the Funded Debt to Consolidated EBITDA Ratio as of any Fiscal Date set
forth below to exceed the percentage set forth below opposite such Fiscal Date:

              Fiscal Date                              Ratio
              -----------                              -----

     June 30, 2001                                     4.75x

     September 30, 2001                                4.75x

     December 31, 2001 and each Fiscal Date            4.25x
     thereafter

      SECTION 6.10.  Fixed Charge Coverage Ratio.  The Company will not permit
the Fixed Charge Coverage Ratio as of any Fiscal Date set forth below to be less
than the ratio set forth below opposite such Fiscal Date:

              Fiscal Date                              Ratio
              -----------                              -----

     June 30, 2001                                     1.25x

     September 30, 2001                                1.25x

--------------------------------------------------------------------------------
<PAGE>

                                                                              53

              Fiscal Date                              Ratio
              -----------                              -----

     December 31, 2001 and each Fiscal Date            1.25x
     thereafter

          SECTION 6.11.  Use of Proceeds. The proceeds of the Loans hereunder
will be used (a) to pay the cash consideration payable in the Exchange Offer and
the Litton Merger, (b) to refinance the Existing Credit Agreements and
Refinanced Debt, (c) to pay related fees and expenses and (d) for working
capital, to finance capital expenditures and permitted acquisitions and for
other general corporate purposes. All borrowings will be in compliance with all
applicable legal and regulatory requirements, including Regulations U and X.

          SECTION 6.12.  Margin Stock. The Company shall not permit more than
25% of the value (as determined by any reasonable method) of the Property of the
Company and the Subsidiaries subject to the restrictions of Section 6.02, 6.04
or 6.05 hereof (or any similar restriction) to be represented by margin stock
(within the meaning of Regulation U or X).

          SECTION 6.13.  Interest Rate Protection Agreements. (a) The Company
will not permit any of its Subsidiaries to enter into or become obligated in
respect of any Interest Rate Protection Agreement, other than, in the case of
any Subsidiary, any Interest Rate Protection Agreement entered into with respect
to Indebtedness of such Subsidiary permitted under Section 6.07.

          (b)  Not later than 120 days after the Effective Date, the Company
shall cause, and thereafter maintain, through a combination of Interest Rate
Protection Agreements and fixed rate Funded Debt, the effective fixed rate
component of its Funded Debt to be approximately equal to or greater than 50%.

          SECTION 6.14.  Modifications of Certain Documents. The Company will
not consent to any modification, supplement or waiver of any of the provisions
of the Northrop Operating Senior Indenture the Northrop Operating Subordinated
Indenture or the Litton Operating Senior Indenture or any agreement, instrument
or other document evidencing or relating to Subordinated Indebtedness, in each
case to the extent that the same would adversely affect in any material respect
the rights or interests of the Agents and the Lenders, without the prior written
consent of the Co-Administrative Agents.

          SECTION 6.15.  Subsidiary Equity Issuance. The Company shall not
permit any Subsidiary to issue Equity to any Person other than the Company or a
Wholly-Owned Subsidiary except (a) directors' qualifying shares and (b) in
connection with the establishment or capitalization of a bona fide joint venture
with the Person or Persons to whom such Equity is issued.

                                  ARTICLE VII

                               Events of Default
<PAGE>

                                                                              54

     If one or more of the following events (herein called "Events of Default")
shall occur and be continuing:

     (a)  the Borrowers shall default in the payment of any principal of any
  Loan when due; or the Borrowers shall default in the payment of any interest
  on any Loan or any other amount payable by them hereunder to any Lender or any
  Agent when due which nonpayment shall have continued for a period of two
  Business Days or more; or

     (b)  (i)  default by the Company or any Subsidiary in the payment of any
  Indebtedness of the Company or any Subsidiary after any applicable period of
  grace, (ii) any event specified in any note, agreement, indenture or other
  document evidencing or relating to any of the Company or any Subsidiary
  Indebtedness shall occur if the effect of such event is to cause, or (with the
  giving of any notice or the lapse of time or both) to permit the holder or
  holders of such Indebtedness (or a trustee or agent on behalf of such holder
  or holders) to cause, such Indebtedness to become due prior to its stated
  maturity or (iii) any event specified in any Interest Rate Protection
  Agreement of the Company or any Subsidiary shall occur if the effect of such
  event is to cause, or (with the giving of any notice or the lapse of time or
  both) to permit, any termination or liquidation payment or payments to become
  due thereunder; except for a default in respect of Indebtedness, (in the case
  of clauses (i) or (ii) of this paragraph), or payments (in the case of clause
  (iii) of this paragraph) not exceeding $50,000,000 in aggregate amount; or

     (c)  any representation, warranty or certification made or deemed made in
  any of the Loan Documents by the Borrowers or any certificate furnished to any
  Lender or Agent pursuant to the provisions hereof shall prove to have been
  false or misleading as of the time made or deemed made or furnished in any
  material respect; or

     (d)  any of the Borrowers shall default in the performance of any of its
  obligations under Section 5.01(h), Section 10.14 or Article VI hereof (other
  than Section 6.15); any of the Borrowers shall default in the performance of
  any of its other obligations in this Agreement and such default shall continue
  unremedied for a period of 30 days after notice thereof to the Borrowers by
  the Co-Administrative Agents or any Lender (through the Co-Administrative
  Agents); or

     (e)  any Borrower or any Subsidiary having total assets of $100,000,000 or
  more shall admit in writing its inability to, or be generally unable to, pay
  its debts as such debts become due; or

     (f)  any Borrower or any Subsidiary having total assets of $100,000,000 or
  more shall (i) apply for or consent to the appointment of, or the taking of
  possession by, a receiver, custodian, trustee or liquidator of itself or of
  all or a substantial part of its property, (ii) make a general assignment for
  the benefit of its creditors, (iii) commence a voluntary case under any law
  relating to bankruptcy, insolvency, reorganization (as now or hereafter in
  effect), (iv) file a petition seeking to take advantage of any other law
  relating to bankruptcy, insolvency, reorganization, winding-up, or composition
  or readjustment of debts, (v) fail to controvert in a timely and appropriate
  manner, or acquiesce in writing to, any petition filed against it in an
<PAGE>

                                                                              55

  involuntary case under any law relating to bankruptcy, insolvency,
  reorganization, or (vi) take any corporate action for the purpose of effecting
  any of the foregoing; or

     (g)  a proceeding or case shall be commenced, without the application or
  consent of any Borrower or any Subsidiary having total assets of $100,000,000
  or more, in any court of competent jurisdiction, seeking (i) its liquidation,
  reorganization, dissolution or winding-up, or the composition or readjustment
  of its debts, (ii) the appointment of a trustee, receiver, custodian,
  liquidator or the like of such Borrower or such Subsidiary or of all or any
  substantial part of its assets, or (iii) similar relief in respect of such
  Borrower or such Subsidiary under any law relating to bankruptcy, insolvency,
  reorganization, winding-up, or composition or adjustment of debts, and such
  proceeding or case shall continue undismissed, or an order, judgment or decree
  approving or ordering any of the foregoing shall be entered and continue
  unstayed and in effect, for a period of 60 days; or an order for relief
  against such Borrower or such Subsidiary shall be entered in an involuntary
  case under any law relating to bankruptcy, insolvency, reorganization; or

     (h)  if (i) a final judgment which, with other outstanding final judgments
  against the Company and all Subsidiaries, exceeds an aggregate of
  $100,000,000, excluding (A) any amounts covered by insurance as to which the
  insurance company shall have acknowledged coverage and (B) the amount of any
  judgment against a Subsidiary other than a Borrower that exceeds the fair
  market value of the assets of such Subsidiary (but only if neither the Company
  nor any other Subsidiary is directly or contingently liable therefor), shall
  be rendered against the Company or any Subsidiary and (ii) within 60 days
  after entry thereof, such judgment shall not have been discharged, vacated or
  reversed or execution thereof stayed pending appeal or within 60 days after
  the expiration of any such stay, such judgment shall not have been discharged,
  vacated or reversed; or

     (i)  an event or condition (i) which might constitute grounds under Section
  4042 of ERISA for the termination of, or for the appointment of a trustee to
  administer, any Plan or Multiemployer Plan and which involves a liability of
  the Company or any Subsidiary having total assets of $100,000,000 or more to
  PBGC in excess of $100,000,000 or (ii) leading to the receipt by the Company
  or any Subsidiary having total assets of $100,000,000 or more from the PBGC of
  a notice of its intention to terminate any Plan or Multiemployer Plan or to
  have a trustee appointed to administer any such Plan or Multiemployer Plan
  shall occur or exist and, as a result of such event or condition, together
  with all other such events or conditions, the Company or any ERISA Affiliate
  shall incur or in the opinion of the Required Lenders shall be reasonably
  likely to incur a liability to a Plan, a Multiemployer Plan or PBGC (or any
  combination of the foregoing) which is, in the determination of the Required
  Lenders, material in relation to the consolidated financial position of the
  Company and the Subsidiaries; or

     (j)  (i) any person or group of persons (within the meaning of Section 13
  or 14 of the Exchange Act, it being agreed that an employee of the Company or
  any Subsidiary for whom shares are held under an employee stock ownership,
  employee retirement, employee savings or similar plan and whose shares are
  voted in accordance with the instructions of such employee shall not be a
  member of a group of persons within the meaning of said Section 13 or 14
  solely because such employee's shares are held by a trustee under said plan)
  shall acquire, directly or
<PAGE>

                                                                              56

  indirectly, beneficial ownership (within the meaning of Rule 13d-3 promulgated
  by the SEC under said Act, as amended) of more than 50% of the outstanding
  shares of stock of the Company having by the terms thereof ordinary voting
  power to elect (whether immediately or ultimately) a majority of the board of
  directors of the Company (irrespective of whether or not at the time stock of
  any other class or classes of stock of the Company shall have or might have
  voting power by reason of the happening of any contingency) or (ii) the
  Company shall cease to own, directly or indirectly, beneficially and of
  record, shares representing 100% of the issued and outstanding capital stock
  of (x) Northrop Operating or (y) after the Litton Merger, Litton Operating; or

     (k)  at any time during any period of 25 consecutive calendar months
  following the date hereof, a majority of the Board of Directors of the Company
  shall not be composed of individuals (i) who were members of the Board of the
  Company or the Board of Northrop Operating (in each case after giving effect
  to the consummation of the Exchange Offer) on the first day of such period,
  (ii) whose election or nomination to said Board was approved by individuals
  referred to in clause (i) above constituting at the time of such election or
  nomination at least a majority of said Board or (iii) whose election or
  nomination to said Board was approved by individuals referred to in clauses
  (i) and (ii) above constituting at the time of such election or nomination at
  least a majority of said Board; or

     (l)  the joint liability of any Borrower for any of the Obligations shall
  cease to be, or shall be asserted by any Borrower not to be, valid and
  enforceable;

     Thereupon, (i) in the case of an Event of Default other than one referred
to in clause (f) or (g) of this Article VII, (x) the Co-Administrative Agents,
upon request of the Required Lenders, shall, by notice to the Borrowers, (x)
cancel the Commitments and/or (y) declare the principal amount then outstanding
of and the accrued interest on the Loans and all other amounts payable by the
Borrowers hereunder to be forthwith due and payable, whereupon such amounts
shall be immediately due and payable without presentment, demand, protest or
other formalities of any kind, all of which are hereby expressly waived by the
Borrowers; and (ii) in the case of the occurrence of an Event of Default
referred to in clause (f) or (g) of this Article VII, the Commitments shall be
automatically canceled and the principal amount then outstanding of, and the
accrued interest on, the Loans and all other amounts payable by the Borrowers
hereunder shall become automatically immediately due and payable without
presentment, demand, protest or other formalities of any kind, all of which are
hereby expressly waived by the Borrowers.

     Without limiting Section 10.02, the Required Lenders may, on behalf of all
the Lenders, waive, for the period and on the conditions (if any) specified in
such waiver, any Event of Default arising from the failure by any Borrower to
perform any of its obligations under Articles V and VI hereof and any
consequences thereof (including any termination of the Commitments and/or any
declaration that the principal of and interest on the Loans and all other
amounts payable by the Borrowers hereunder shall be forthwith due and payable).
In the case of any such waiver, the Borrowers, the Lenders and the Co-
Administrative Agents, for said period and on said conditions, shall be restored
to their respective former positions and rights hereunder, and any Event of
Default so waived shall, for said period and on said conditions, be deemed not
to be continuing for the
<PAGE>

                                                                              57

purposes of this Agreement; provided that no such waiver shall extend to any
subsequent or other Event of Default or impair any other right of any Lender or
Agent hereunder.

                                 ARTICLE VIII

                                  The Agents

     In order to expedite the transactions contemplated by this Agreement, Chase
and CSFB are hereby appointed to act as Co-Administrative Agents and Chase is
hereby appointed to act as Payment Agent.  Each of the Lenders hereby
irrevocably authorizes the Co-Administrative Agents and the Payment Agent to
take such actions on its behalf and to exercise such powers as are delegated to
the Co-Administrative Agents and the Payment Agent by the terms of the Loan
Documents, together with such actions and powers as are reasonably incidental
thereto.

     Any bank serving as Co-Administrative Agent or Payment Agent hereunder
shall have the same rights and powers in its capacity as a Lender as any other
Lender and may exercise the same as though it were not such Co-Administrative
Agent or Payment Agent, and such bank and its Affiliates may accept deposits
from, lend money to and generally engage in any kind of business with the
Borrowers, any Subsidiary or other Affiliate thereof as if it were not such Co-
Administrative Agent or Payment Agent hereunder.

     The Co-Administrative Agents and the Payment Agent shall not have any
duties or obligations except those expressly set forth in the Loan Documents.
Without limiting the generality of the foregoing, (a) no Co-Administrative Agent
or Payment Agent shall be subject to any fiduciary or other implied duties,
regardless of whether a Default has occurred and is continuing, (b) no Co-
Administrative Agent or Payment Agent shall have any duty to take any
discretionary action or exercise any discretionary powers, except discretionary
rights and powers expressly contemplated by the Loan Documents that such Co-
Administrative Agent or Payment Agent is required to exercise in writing by the
Required Lenders (or such other number or percentage of the Lenders as shall be
necessary under the circumstances as provided in Section 10.02), and (c) except
as expressly set forth in the Loan Documents, no Co-Administrative Agent or
Payment Agent shall have any duty to disclose, and shall not be liable for the
failure to disclose, any information relating to the Company or any Subsidiary
that is communicated to or obtained by the bank serving as Co-Administrative
Agent or Payment Agent or any of its Affiliates in any capacity. No Co-
Administrative Agent or Payment Agent shall be liable for any action taken or
not taken by it with the consent or at the request of the Required Lenders (or
such other number or percentage of the Lenders as shall be necessary under the
circumstances as provided in Section 10.02) or in the absence of its own gross
negligence or wilful misconduct. No Co-Administrative Agent or Payment Agent
shall be deemed to have knowledge of any Default unless and until written notice
thereof is given to such Co-Administrative Agent or Payment Agent by the
Borrowers or a Lender, and no such Co-Administrative Agent or Payment Agent
shall be responsible for or have any duty to ascertain or inquire into (i) any
statement, warranty or representation made in or in connection with any Loan
Document, (ii) the contents of any certificate, report or other document
delivered hereunder or in connection herewith, (iii) the performance or
observance of any of the covenants, agreements or other terms or conditions set
<PAGE>

                                                                              58

forth in any Loan Document, (iv) the validity, enforceability, effectiveness or
genuineness of any Loan Document or any other agreement, instrument or document,
or (v) the satisfaction of any condition set forth in Article IV or elsewhere in
any Loan Document, other than to confirm receipt of items expressly required to
be delivered to such Co-Administrative Agent or Payment Agent.

     Each Co-Administrative Agent or Payment Agent shall be entitled to rely
upon, and shall not incur any liability for relying upon, any notice, request,
certificate, consent, statement, instrument, document or other writing believed
by it to be genuine and to have been signed or sent by the proper Person. Each
Co-Administrative Agent or Payment Agent also may rely upon any statement made
to it orally or by telephone and believed by it to be made by the proper Person,
and shall not incur any liability for relying thereon. Each Co-Administrative
Agent or Payment Agent may consult with legal counsel (who may be counsel for
the Borrowers), independent accountants and other experts selected by it, and
shall not be liable for any action taken or not taken by it in accordance with
the advice of any such counsel, accountants or experts.

     Each Co-Administrative Agent or Payment Agent may perform any and all its
duties and exercise its rights and powers by or through any one or more sub-
agents appointed by such Co-Administrative Agent or Payment Agent. Each Co-
Administrative Agent or Payment Agent and any such sub-agent may perform any and
all its duties and exercise its rights and powers through their respective
Related Parties. The exculpatory provisions of the preceding paragraphs and the
provisions of Section 10.03 shall apply to any such sub-agent and to the Related
Parties of the Co-Administrative Agents or Payment Agent and any such sub-agent,
and shall apply to their respective activities in connection with the
syndication of the credit facilities provided for herein as well as activities
as Co-Administrative Agent or Payment Agent.

     Subject to the appointment and acceptance of a successor Co-Administrative
Agent or Payment Agent as provided in this paragraph, any Co-Administrative
Agent or the Payment Agent may resign at any time by notifying the Lenders and
the Company. Upon any such resignation, the Required Lenders shall have the
right (in consultation with, and with the consent of (unless an Event of Default
has occurred and is continuing pursuant to clause (f) or (g) of Article VII) the
Company, which shall not be unreasonably withheld) to appoint a successor. If no
successor shall have been so appointed by the Required Lenders and shall have
accepted such appointment within 30 days after the retiring Co-Administrative
Agent or Payment Agent gives notice of its resignation, then the retiring Co-
Administrative Agent or Payment Agent may (in consultation with, and with the
consent of (unless an Event of Default has occurred and is continuing pursuant
to clause (f) or (g) of Article VII), the Company, which shall not unreasonably
withhold such consent and which shall, if the retiring Co-Administrative Agent
or Payment Agent shall so request, designate and approve a successor Co-
Administrative Agent or Payment Agent) on behalf of the Lenders, appoint a
successor Co-Administrative Agent or Payment Agent which shall be a bank with an
office in New York, New York, or an Affiliate of any such bank. Upon the
acceptance of its appointment as Co-Administrative Agent or Payment Agent
hereunder by a successor, such successor shall succeed to and become vested with
all the rights, powers, privileges and duties of the retiring Co-Administrative
Agent or Payment Agent, and the retiring Co-Administrative Agent or Payment
Agent shall be discharged from its duties and obligations hereunder. The fees
payable by the Borrowers to a successor Co-Administrative Agent or the Payment
Agent shall be the same as those payable to its predecessor unless otherwise
agreed
<PAGE>

                                                                              59

among the Borrowers and such successor. After a Co-Administrative Agent's or the
Payment Agent's resignation hereunder, the provisions of this Article and
Section 10.03 shall continue in effect for the benefit of such retiring Co-
Administrative Agent or Payment Agent, its sub-agents and their respective
Related Parties in respect of any actions taken or omitted to be taken by any of
them while it was acting as Co-Administrative Agent or Payment Agent.

     Each Lender acknowledges that it has, independently and without reliance
upon the Co-Administrative Agents or the Payment Agent or any other Lender and
based on such documents and information as it has deemed appropriate, made its
own credit analysis and decision to enter into this Agreement. Each Lender also
acknowledges that it will, independently and without reliance upon the Co-
Administrative Agents or the Payment Agent or any other Lender and based on such
documents and information as it shall from time to time deem appropriate,
continue to make its own decisions in taking or not taking action under or based
upon this Agreement, any other Loan Document, any related agreement or any
document furnished hereunder or thereunder.

     None of the institutions named as Syndication Agent or Co-Documentation
Agents in the heading of this Agreement shall, in their capacities as such, have
any duties or responsibilities of any kind under this Agreement.

                                  ARTICLE IX

                   Joint and Several Liability of Borrowers

     In order to induce the Lenders to extend credit hereunder, each Borrower
agrees that it will be jointly and severally liable for all the Obligations,
including the principal of and interest on all Loans requested by and made to
either of the other Borrowers.  Each Borrower further agrees that the due and
punctual payment of the Obligations may be extended or renewed, in whole or in
part, without notice to or further assent from it, and that it will remain bound
hereunder notwithstanding any such extension or renewal of any Obligation.

     Each Borrower waives presentment to, demand of payment from and protest to
any other Borrower of any of the Obligations, and also waives notice of
acceptance of its obligations and notice of protest for nonpayment. The
obligations of the Borrowers hereunder shall not be affected by (a) the failure
of any Lender or Agent to assert any claim or demand or to enforce or exercise
any right or remedy against any other Borrower under the provisions of this
Agreement or otherwise or (b) any rescission, waiver, amendment or modification
of any of the terms or provisions of this Agreement or any other agreement.

     Each Borrower further agrees that its agreement under this Article IX
constitutes a promise of payment when due (whether or not any bankruptcy or
similar proceeding shall have stayed the accrual or collection of any of the
Obligations or operated as a discharge thereof) and not merely of collection,
and waives any right to require that any resort be had by any Lender to any
balance of any deposit account or credit on the books of any Lender in favor of
any Borrower or any other Person.
<PAGE>

                                                                              60

     The obligations of each Borrower under this Article IX shall not be subject
to any reduction, limitation, impairment or termination for any reason, and
shall not be subject to any defense or setoff, counterclaim, recoupment or
termination whatsoever, by reason of the invalidity, illegality or
unenforceability of the Obligations, any impossibility in the performance of the
Obligations or otherwise. Without limiting the generality of the foregoing, the
obligations of the Borrowers under this Article IX shall not be discharged or
impaired or otherwise affected by the failure of any Agent or any Lender to
assert any claim or demand or to enforce any remedy under this Agreement or any
other agreement, by any waiver or modification in respect of any thereof, by any
default, failure or delay, willful or otherwise, in the performance of any of
the Obligations, or by any other act or omission which may or might in any
manner or to any extent vary the risk of such Borrower or otherwise operate as a
discharge of such Borrower or any Borrower as a matter of law or equity.

     Each Borrower further agrees that its obligations under this Article IX
shall continue to be effective or be reinstated, as the case may be, if at any
time payment, or any part thereof, of any Obligation is rescinded or must
otherwise be restored by the any Agent or any Lender upon the bankruptcy or
reorganization of any other Borrower or otherwise.

     In furtherance of the foregoing and not in limitation of any other right
which any Agent or any Lender may have at law or in equity against any Borrower
by virtue of this Article IX, upon the failure of any other Borrower to pay any
Obligation when and as the same shall become due, whether at maturity, by
acceleration, after notice of prepayment or otherwise, each Borrower hereby
promises to and will, upon receipt of written demand by any Agent, forthwith
pay, or cause to be paid, in cash the amount of such unpaid Obligation.

     If by virtue of the provisions set forth herein, either Northrop Operating
or Litton Operating is required to repay and shall repay Loans the proceeds of
which were received by the other, the Borrower that received such proceeds
agrees to reimburse the Borrower that shall have repaid such Loans. Upon payment
by any Borrower of any sums as provided above, all rights of such Borrower
against any Borrower arising as a result thereof by way of right of subrogation
or otherwise shall in all respects be subordinated and junior in right of
payment to the prior indefeasible payment in full of all the Obligations owed by
the Borrowers to the Lenders.

                                   ARTICLE X

                                 Miscellaneous

      SECTION 10.01.  Notices. Except in the case of notices and other
communications expressly permitted to be given by telephone, all notices and
other communications provided for herein shall be in writing and shall be
delivered by hand or overnight courier service, mailed by certified or
registered mail or sent by telecopy, as follows:

     (a)  if to any of the Borrowers, to it at 1840 Century Park East, Los
  Angeles, CA 90067-2199, Attention of Albert F. Myers, Corporate Vice President
  and Treasurer and David H. Strode, Assistant Treasurer (both at Telecopy No.
  (310) 201-3088);
<PAGE>

                                                                              61

     (b) if to the Agents:

          (1)  to The Chase Manhattan Bank, Loan and Agency Services Group, One
    Chase Manhattan Plaza, 8th Floor, New York, New York 10081, Attention of
    Richard Smith (Telecopy No. (212) 270-5150), with a copy to The Chase
    Manhattan Bank, 270 Park Avenue, New York, NY 10017, Attention of Doris Mesa
    (Telecopy No. (212) 552-5650); and

          (2)  to Credit Suisse First Boston, 11 Madison Avenue, New York, NY
    10010, Attention of [   ] Telecopy No. [   ]); and

          (c)  if to any other Lender, to it at its address (or telecopy number)
  set forth in its Administrative Questionnaire.

Any party hereto may change its address or telecopy number for notices and other
communications hereunder by notice to the other parties hereto.  All notices and
other communications given to any party hereto in accordance with the provisions
of this Agreement shall be deemed to have been given on the date of receipt.

          SECTION 10.02.  Waivers; Amendments. (a) No failure or delay by any
Agent or any Lender in exercising any right or power hereunder or under any
other Loan Document shall operate as a waiver thereof, nor shall any single or
partial exercise of any such right or power, or any abandonment or
discontinuance of steps to enforce such a right or power, preclude any other or
further exercise thereof or the exercise of any other right or power. The rights
and remedies of the Agents and the Lenders hereunder and under any other Loan
Documents are cumulative and are not exclusive of any rights or remedies that
they would otherwise have. No waiver of any provision of any Loan Document or
consent to any departure by the Borrowers therefrom shall in any event be
effective unless the same shall be permitted by paragraph (b) of this Section,
and then such waiver or consent shall be effective only in the specific instance
and for the purpose for which given. Without limiting the generality of the
foregoing, the making of a Loan shall not be construed as a waiver of any
Default, regardless of whether any Agent or any Lender may have had notice or
knowledge of such Default at the time.

          (b)  Neither this Agreement nor any other Loan Document nor any
provision hereof or thereof may be waived, amended or modified except pursuant
to an agreement or agreements in writing entered into by the Borrowers party
thereto and the Required Lenders or by the Borrowers party thereto and the Co-
Administrative Agents with the consent of the Required Lenders; provided that no
such agreement shall (i) increase the Commitment of any Lender without the
written consent of such Lender, (ii) reduce the principal amount of any Loan or
reduce the rate of interest thereon, or reduce any fees payable to any Lender
hereunder, without the written consent of each Lender affected thereby, (iii)
postpone the scheduled date of payment of the principal amount of any Loan, or
any interest thereon, or any fees payable hereunder, or reduce the amount of,
waive or excuse any such payment, or postpone the scheduled date of expiration
of any Commitment, without the written consent of each Lender affected thereby,
(iv) change Section 2.15 in a manner that would alter the pro rata sharing of
payments required thereby, without the written consent of each Lender affected
thereby, (v) change any of the provisions of this Section or the definition of
<PAGE>

                                                                              62

"Required Lenders" or any other provision of any Loan Document specifying the
number or percentage of Lenders required to waive, amend or modify any rights
hereunder or make any determination or grant any consent hereunder or (vi)
release any Borrower from its joint and several liability for the Obligations
hereunder, or limit its liability in respect of such joint and several
liability, without the written consent of each Lender; provided further that no
such agreement shall amend, modify or otherwise affect the rights or duties of
any Agent hereunder without the prior written consent of such Agent.

      SECTION 10.03.  Expenses; Indemnity; Damage Waiver. (a) The Borrowers
shall pay (i) all reasonable out-of-pocket expenses incurred by the Agents and
their Affiliates named on the cover of this Agreement, including the reasonable
fees, charges and disbursements of one outside counsel for the Agents, in
connection with the syndication, prior to the date hereof, of the credit
facilities provided for herein, the preparation and administration of the Loan
Documents or any amendments, modifications or waivers (requested by or for the
benefit of the Borrowers) of the provisions hereof (whether or not the
transactions contemplated hereby or thereby shall be consummated), and (ii) all
reasonable out-of-pocket expenses incurred by any Agent or any Lender, including
the fees, charges and disbursements of any counsel for any Agent or any Lender,
(A) related to the enforcement of its rights in connection with the Loan
Documents (including its rights under this Section) or (B) incurred during any
workout, restructuring or related negotiations in respect of the Loan Documents
or the Loans.

     (b)  The Borrowers shall indemnify each Agent, each Lender, each of their
Affiliates and each officer, director, employee or agent of the foregoing
Persons involved directly or indirectly in the Transactions (each such Person
being called an "Indemnitee") against, and hold each Indemnitee harmless from,
any and all losses, claims, damages, liabilities and reasonable related expenses
(other than Excluded Taxes), including the reasonable fees, charges and
disbursements of any counsel for any Indemnitee, incurred by or asserted against
any Indemnitee arising out of, in connection with, or as a result of (i) the
execution or delivery of any Loan Document or any agreement or instrument
contemplated thereby, the performance by the parties to the Loan Documents of
their respective obligations thereunder or the consummation of the Transactions
or any other transactions contemplated hereby, (ii) any Loan or the use of the
proceeds therefrom or (iii) any actual or prospective claim, litigation,
investigation or proceeding relating to any of the foregoing, whether based on
contract, tort or any other theory and regardless of whether any Indemnitee is a
party thereto, except, as to each Indemnitee, for losses, claims, damages,
liabilities and related expenses determined by a court of competent jurisdiction
to have resulted from the gross negligence or wilful misconduct of such
Indemnitee.

     (c)  To the extent that the Borrowers fail to pay any amount required to be
paid by them to any Agent under paragraph (a) or (b) of this Section each Lender
severally agrees to pay to such Agent such Lender's Applicable Percentage
(determined as of the time that the applicable unreimbursed expense or indemnity
payment is sought) of such unpaid amount; provided that the unreimbursed expense
or indemnified loss, claim, damage, liability or related expense, as the case
may be, was incurred by or asserted against such Agent in its capacity as such.

     (d)  To the extent permitted by applicable law, the Borrowers shall not
assert, and hereby waive, any claim against any Indemnitee, on any theory of
liability, for special, indirect,
<PAGE>

                                                                              63

consequential or punitive damages (as opposed to direct or actual damages)
arising out of, in connection with, or as a result of, this Agreement or any
agreement or instrument contemplated hereby, the Transactions, any Loan or the
use of the proceeds thereof.

     (e)  All amounts due under this Section shall be payable promptly after
written demand therefor setting forth the amount and the nature of the expense
or claim, as applicable.

      SECTION 10.04.  Successors and Assigns. (a) The provisions of this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns permitted hereby, except that none
of the Borrowers may assign or otherwise transfer any of its rights or
obligations hereunder without the prior written consent of each Lender (and any
attempted assignment or transfer by any of the Borrowers without such consent
shall be null and void). Nothing in this Agreement, expressed or implied, shall
be construed to confer upon any Person (other than the parties hereto, their
respective successors and assigns permitted hereby and, to the extent expressly
contemplated hereby, the Related Parties of each of the Agents and the Lenders)
any legal or equitable right, remedy or claim under or by reason of this
Agreement.

     (b)  Any Lender may assign to one or more assignees all or a portion of its
rights and obligations under this Agreement (including all or a portion of its
Commitment and the Loans at the time owing to it); provided that (i) except in
the case of an assignment to a Lender or an Affiliate of a Lender, the Company
and the Payment Agent must give their prior written consent to such assignment
(which consent shall not be unreasonably withheld), (ii) except in the case of
an assignment to a Lender or an Affiliate of a Lender or an assignment of the
entire remaining amount of the assigning Lender's Commitment, the amount of the
Commitment of the assigning Lender subject to each such assignment (determined
as of the date of the Assignment and Acceptance with respect to such assignment
is delivered to the Payment Agent) shall not be less than $10,000,000 unless the
Company and the Payment Agent otherwise consent, (iii) each partial assignment
shall be made as an assignment of a proportionate part of all the assigning
Lender's rights and obligations under this Agreement, except that this clause
(iii) shall not apply to its rights in respect of outstanding Competitive Loans,
(iv) the parties to each assignment shall execute and deliver to the Co-
Administrative Agents an Assignment and Acceptance, together with (except in the
case of an assignment by or to a Co-Administrative Agent) a processing and
recordation fee of $3,500, and (v) the assignee, if it shall not be a Lender,
shall deliver to the Payment Agent an Administrative Questionnaire; and provided
further that any consent of the Company otherwise required under this paragraph
shall not be required if an Event of Default under clause (f) or (g) of Article
VII has occurred and is continuing.  Subject to acceptance and recording thereof
pursuant to paragraph (d) of this Section, from and after the effective date
specified in each Assignment and Acceptance the assignee thereunder shall be a
party hereto and, to the extent of the interest assigned by such Assignment and
Acceptance, have the rights and obligations of a Lender under this Agreement,
and the assigning Lender thereunder shall, to the extent of the interest
assigned by such Assignment and Acceptance, be released from its obliga  tions
under this Agreement (and, in the case of an Assignment and Acceptance covering
all of the assigning Lender's rights and obligations under this Agreement, such
Lender shall cease to be a party hereto but shall continue to be entitled to the
benefits of Sections 2.13, 2.14, 2.15 and 10.03.  Any assignment or transfer by
a Lender of rights or obligations under this Agreement that does not comply with
this paragraph shall be treated for
<PAGE>

                                                                              64

purposes of this Agreement as a sale by such Lender of a participation in such
rights and obligations in accordance with paragraph (e) of this Section.

     (c)  The Payment Agent, acting for this purpose as agent of the Borrowers,
shall maintain at one of its offices in The City of New York a copy of each
Assignment and Acceptance delivered to it and a register for the recordation of
the names and addresses of the Lenders, and the Commitment of, and principal
amount of the Loans owing to, each Lender pursuant to the terms hereof from time
to time (the "Register").  The entries in the Register shall be conclusive, and
the Borrowers, the Co-Administrative Agents and the Lenders may treat each
Person whose name is recorded in the Register pursuant to the terms hereof as a
Lender hereunder for all purposes of this Agreement, notwithstanding notice to
the contrary.  The Register shall be available for inspection by the Borrowers
and any Lender, at any reasonable time and from time to time upon reasonable
prior notice.

     (d)  Upon its receipt of a duly completed Assignment and Acceptance
executed by an assigning Lender and an assignee, the assignee's completed
Administrative Questionnaire (unless the assignee shall already be a Lender
hereunder), the processing and recordation fee referred to in paragraph (b) of
this Section and any written consent to such assignment required by paragraph
(b) of this Section, the Payment Agent shall accept such Assignment and
Acceptance and record the information contained therein in the Register.  No
assignment shall be effective for purposes of this Agreement unless it has been
recorded in the Register as provided in this paragraph.

     (e)  Any Lender may, without the consent of the Borrowers or the Payment
Agent, sell participations to one or more banks or other entities (a
"Participant") in all or a portion of such Lender's rights and obligations under
this Agreement (including all or a portion of its Commitment and the Loans owing
to it); provided that (i) such Lender's obligations under this Agreement shall
remain unchanged, (ii) such Lender shall remain solely responsible to the other
parties hereto for the performance of such obligations and (iii) the Borrowers,
the Co-Administrative Agents, and the other Lenders shall continue to deal
solely and directly with such Lender in connection with such Lender's rights and
obligations under this Agreement.  Any agreement or instrument pursuant to which
a Lender sells such a participation shall provide that such Lender shall retain
the sole right to enforce the Loan Documents and to approve any amendment,
modification or waiver of any provision of the Loan Documents; provided that
such agreement or instrument may provide that such Lender will not, without the
consent of the Participant, agree to any amendment, modification or waiver
described in the first proviso to Section 10.02(b) that affects such
Participant.  Subject to paragraph (f) of this Section, each Borrower agrees
that each Participant shall be entitled to the benefits of Sections 2.13, 2.14
and 2.15 to the same extent as if it were a Lender and had acquired its interest
by assignment pursuant to paragraph (b) of this Section.

     (f)  A Participant shall not be entitled to receive any greater payment
under Section 2.13 or 2.15 than the applicable Lender would have been entitled
to receive with respect to the participation sold to such Participant. A
Participant that would be a Foreign Lender if it were a Lender shall not be
entitled to the benefits of Section 2.15 unless the Borrowers are notified of
the participation sold to such Participant and such Participant agrees, for the
benefit of the Borrowers, to comply with Section 2.15(e) as though it were a
Lender.
<PAGE>

                                                                              65

     (g)  Any Lender may at any time pledge or assign a security interest in all
or any portion of its rights under this Agreement to secure obligations of such
Lender to a Federal Reserve Bank, and this Section shall not apply to any such
pledge or assignment of a security interest; provided that no such pledge or
assignment of a security interest shall release a Lender from any of its
obligations hereunder or substitute any such pledgee or assignee for such Lender
as a party hereto.

     (h)  Notwithstanding anything to the contrary contained herein, any Lender
(a "Granting Lender") may grant to a special purpose funding vehicle (an "SPC")
of such Granting Lender, identified as such in writing from time to time by the
Granting Lender to the Co-Administrative Agents and the Borrowers, the option to
provide to the Borrowers all or any part of any Loan that such Granting Lender
would otherwise be obligated to make to the Borrowers pursuant to Section 2.01;
provided that (i) nothing herein shall constitute a commitment to make any Loan
by any SPC and (ii) if an SPC elects not to exercise such option or otherwise
fails to provide all or any part of such Loan, the Granting Lender shall be
obligated to make such Loan pursuant to the terms hereof. The making of a Loan
by an SPC hereunder shall be deemed to utilize the Commitment of the Granting
Lender to the same extent, and as if, such Loan were made by the Granting
Lender. Each party hereto hereby agrees that no SPC shall be liable for any
payment under this Agreement for which a Lender would otherwise be liable, for
so long as, and to the extent, the related Granting Lender makes such payment.
In furtherance of the foregoing, each party hereto hereby agrees that, prior to
the date that is one year and one day after the payment in full of all
outstanding senior indebtedness of any SPC, it will not institute against, or
join any other person in instituting against, such SPC any bankruptcy,
reorganization, arrangement, insolvency or liquidation proceedings or similar
proceedings under the laws of the United States or any State thereof. In
addition, notwithstanding anything to the contrary contained in this Section
10.04, any SPC may (i) with notice to, but without the prior written consent of,
the Borrowers and the Co-Administrative Agents and without paying any processing
fee therefor, assign all or a portion of its interests in any Loans to its
Granting Lender or (if consented to by the Borrowers and Co-Administrative
Agents) to any financial institutions providing liquidity and/or credit
facilities to or for the account of such SPC to fund the Loans made by such SPC
or to support the securities (if any) issued by such SPC to fund such Loans and
(ii) disclose on a confidential basis any non-public information relating to its
Loans (but not relating to any of the Borrowers or their Affiliates, except with
such Borrower's consent) to any rating agency, commercial paper dealer or
provider of any surety, guarantee or credit or liquidity enhancement to such
SPC.

     SECTION 10.05.  Survival. All covenants, agreements, representations and
warranties made by the Borrowers herein, in the other Loan Documents and in the
certificates or other instruments delivered in connection with or pursuant to
this Agreement or any other Loan Document shall be considered to have been
relied upon by the other parties hereto and shall survive the execution and
delivery of the Loan Documents and the making of any Loans, regardless of any
investigation made by any such other party or on its behalf and notwithstanding
that any Co-Administrative Agent or any Lender may have had notice or knowledge
of any Default or incorrect representation or warranty at the time any credit is
extended hereunder, and shall continue in full force and effect as long as the
principal of or any accrued interest on any Loan or any fee or any other amount
payable under this Agreement is outstanding and unpaid and so long as the
Commitments have not expired or terminated. The provisions of Sections 2.13,
2.14, 2.15 and 10.03 and Article VIII shall survive and remain in full force and
effect regardless of the
<PAGE>

                                                                              66

consummation of the transactions contemplated hereby, the repayment of the
Loans, the expiration or termination of the Commitments or the termination of
this Agreement or any provision hereof.

     SECTION 10.06.  Counterparts; Integration; Effectiveness. This Agreement
may be executed in counterparts (and by different parties hereto on different
counterparts), each of which shall constitute an original, but all of which when
taken together shall constitute a single contract. This Agreement, the other
Loan Documents and any separate letter agreements with respect to fees payable
to the Co-Administrative Agents constitute the entire contract among the parties
relating to the subject matter hereof and supersede any and all previous
agreements and understandings, oral or written, relating to the subject matter
hereof. Except as provided in Section 4.01, this Agreement shall become
effective when it shall have been executed by the Co-Administrative Agents and
when the Co-Administrative Agents shall have received counterparts hereof which,
when taken together, bear the signatures of each of the other parties hereto
(other than Litton Operating, which shall execute a counterpart of this
Agreement as provided in Section 10.14), and thereafter shall be binding upon
and inure to the benefit of the parties hereto and their respective successors
and assigns. Delivery of an executed counterpart of a signature page of this
Agreement by telecopy shall be effective as delivery of a manually executed
counterpart of this Agreement.

     SECTION 10.07.  Severability. Any provision of any Loan Document held to be
invalid, illegal or unenforceable in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such invalidity, illegality or
unenforceability without affecting the validity, legality and enforceability of
the remaining provisions of such Loan Document; and the invalidity of a
particular provision in a particular jurisdiction shall not invalidate such
provision in any other jurisdiction.

     SECTION 10.08.  Right of Setoff. If an Event of Default shall have occurred
and be continuing, each Lender is hereby authorized at any time and from time to
time, to the fullest extent permitted by law, to setoff and apply any and all
deposits (general or special, time or demand, provisional or final) at any time
held and other obligations at any time owing by such Lender or Affiliate to or
for the credit or the account of any Borrower against any of and all the
obligations of the Borrowers now or hereafter existing under this Agreement held
by such Lender, irrespective of whether or not such Lender shall have made any
demand under this Agreement. The rights of each Lender under this Section are in
addition to and shall not limit other rights and remedies (including other
rights of setoff) which such Lender may have.

     SECTION 10.09.  Governing Law; Jurisdiction; Consent to Service of Process.
(a) This Agreement shall be construed in accordance with and governed by the law
of the State of New York.

     (b)  Each of the Borrowers hereby irrevocably and unconditionally submits,
for itself and its property, to the nonexclusive jurisdiction of the Supreme
Court of the State of New York sitting in New York County and of the United
States District Court of the Southern District of New York, and any appellate
court from any thereof, in any action or proceeding arising out of or relating
to any Loan Document, or for recognition or enforcement of any judgment, and
each of the parties hereto hereby irrevocably and unconditionally agrees that
all claims in respect of any such action or proceeding may be heard and
determined in such New York State or, to the extent permitted by
<PAGE>

                                                                              67

law, in such Federal court. Each of the parties hereto agrees that a final
judgment in any such action or proceeding shall be conclusive and may be
enforced in other jurisdictions by suit on the judgment or in any other manner
provided by law. Nothing in this Agreement or any other Loan Document shall
affect any right that any Agent or any Lender may otherwise have to bring any
action or proceeding relating to this Agreement or any other Loan Document
against the Borrowers or their properties in the courts of any jurisdiction.

     (c)  Each of the Borrowers hereby irrevocably and unconditionally waives,
to the fullest extent it may legally and effectively do so, any objection which
they may now or hereafter have to the laying of venue of any suit, action or
proceeding arising out of or relating to this Agreement or any other Loan
Document in any court referred to in paragraph (b) of this Section. Each of the
parties hereto hereby irrevocably waives, to the fullest extent permitted by
law, the defense of an inconvenient forum to the maintenance of such action or
proceeding in any such court.

     SECTION 10.10.  WAIVER OF JURY TRIAL. EACH PARTY HERETO HEREBY WAIVES, TO
THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL
BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF OR
RELATING TO THIS AGREEMENT, ANY OTHER LOAN DOCUMENT OR THE TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER
THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR
ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH
OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING
WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN
INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS
AND CERTIFICATIONS IN THIS SECTION.

     SECTION 10.11.  Headings. Article and Section headings and the Table of
Contents used herein are for convenience of reference only, are not part of this
Agreement and shall not affect the construction of, or be taken into
consideration in interpreting, this Agreement.

     SECTION 10.12.  Confidentiality. Each Lender and each of the Co-
Administrative Agents agrees (on behalf of itself and each of its affiliates,
directors, officers, employees and representatives) to keep confidential, in
accordance with their customary procedures for handling confidential information
of this nature and in accordance with safe and sound banking practices, any non-
public information supplied to it by the Borrowers pursuant to this Agreement
which is identified by the Borrowers as being proprietary, private and/or
confidential at the time the same is delivered to the Lenders or the Co-
Administrative Agents, provided that nothing herein shall limit the disclosure
of any such information (a) to the extent required by statute, rule, regulation
or judicial process, (b) to counsel for any of the Lenders or the Co-
Administrative Agents, (c) to bank examiners, auditors or accountants, (d) to
the Co-Administrative Agents or any other Lender, (e) in connection with any
litigation to which any one or more of the Lenders or the Co-Administrative
Agents is a party or (f) to any assignee or participant (or prospective assignee
or participant) SO LONG AS SUCH ASSIGNEE OR PARTICIPANT (OR PROSPECTIVE ASSIGNEE
OR PARTICIPANT) FIRST EXECUTES AND DELIVERS TO THE RESPECTIVE LENDER A
<PAGE>

                                                                              68

CONFIDENTIALITY AGREEMENT SUBSTANTIALLY IN THE FORM OF EXHIBIT D (WHEREUPON SUCH
BANK SHALL PROMPTLY DELIVER A COPY OF SUCH CONFIDENTIALITY AGREEMENT TO THE
COMPANY); provided, further, that (i) unless specifically prohibited by
applicable law or court order, each Lender and the Co-Administrative Agents
shall, prior to disclosure thereof, notify the Borrowers of any request for
disclosure of any such non-public information (x) by any governmental agency or
representative thereof (other than any such request in connection with an
examination of the financial condition of such Lender by such governmental
agency) or (y) pursuant to legal process and (ii) in no event shall any Lender
or the Co-Administrative Agents be obligated or required to return any materials
furnished by the Borrowers; and, provided, finally, that no Lender shall,
without the applicable Borrower's prior consent, provide any information
relating to projections of that Borrower's financial performance to any
participant or any prospective assignee or participant (other than any bank or
other financial institution identified to the Borrowers as a participant under
the Existing Credit Agreement in a notice given to the Borrowers prior to the
Restatement Date), and, in lieu thereof, each of the Borrowers shall, promptly
following the request of any Lender and at the Borrowers' expense, provide to a
participant the projections of each of the Borrowers' financial performance that
has been made available to such Lender. Each Lender agrees that money damages
would not be a sufficient remedy for any breach of such Lender's obligations
under this Section 10.12 and that, in addition to all other remedies available
to the Borrowers at law or in equity, the Borrowers shall be entitled to
injunctive relief against such Lender as a remedy for such breach.

     SECTION 10.13.  Interest Rate Limitation. Notwithstanding anything herein
to the contrary, if at any time the interest rate applicable to any Loan,
together with all fees, charges and other amounts which are treated as interest
on such Loan under applicable law (collectively the "Charges"), shall exceed the
maximum lawful rate (the "Maximum Rate") which may be contracted for, charged,
taken, received or reserved by the Lender holding such Loan in accordance with
applicable law, the rate of interest payable in respect of such Loan hereunder,
together with all Charges payable in respect thereof, shall be limited to the
Maximum Rate and, to the extent lawful, the interest and Charges that would have
been payable in respect of such Loan but were not payable as a result of the
operation of this Section shall be cumulated and the interest and Charges
payable to such Lender in respect of other Loans or periods shall be increased
(but not above the Maximum Rate therefor) until such cumulated amount, together
with interest thereon at the Federal Funds Effective Rate to the date of
repayment, shall have been received by such Lender.

     SECTION 10.14.  Execution by Litton Operating. At such time as Litton
Operating shall have become a Subsidiary, the Company will forthwith cause
Litton Operating to execute this Agreement in the space provided below, to
deliver a counterpart hereof to the Co-Administrative Agents and to deliver such
other documents as shall be required to satisfy the conditions set forth in
Section 4.01(a), (b), (c) and (e), insofar as they relate to Litton Operating,
and upon such execution and delivery, Litton Operating shall become a party to
and a Borrower under this Agreement with the same effect as if it had originally
been a party hereto.
<PAGE>

                                                                              69

     IN WITNESS WHEREOF, the parties hereto have caused this Agreement to be
duly executed by their respective authorized officers as of the day and year
first above written.

                                NNG, INC.,

                                      by
                                        _______________________________________
                                        Name:
                                        Title:

                                NORTHROP GRUMMAN CORPORATION,

                                      by
                                        _______________________________________
                                        Name:
                                        Title:

                                THE CHASE MANHATTAN BANK,
                                individually and as Co-Administrative Agent and
                                Payment Agent,

                                      by
                                        _______________________________________
                                        Name:
                                        Title:

                                CREDIT SUISSE FIRST BOSTON,
                                individually and as Co-Administrative Agent,

                                      by
                                        _______________________________________
                                        Name:
                                        Title:

                                     by
                                        _______________________________________
                                        Name:
                                        Title:
<PAGE>

                                                                              70

                                CITIBANK, N.A.,

                                        by
                                           ____________________________________
                                           Name:
                                           Title:

                                THE BANK OF NOVA SCOTIA,

                                        by
                                           ____________________________________
                                           Name:
                                           Title:

                                DEUTSCHE BANC ALEX. BROWN
                                SECURITIES INC.

                                        by
                                           ____________________________________
                                           Name:
                                           Title:

                                [LENDERS],

                                        by
                                           ____________________________________
                                           Name:
                                           Title:

In accordance with Section 10.14 of the foregoing Agreement, Litton Industries,
Inc., by its execution hereof, hereby becomes a party to and a Borrower under
such Agreement with the same effect as if it had originally been a party
thereto.

                                LITTON INDUSTRIES, INC.,

                                        by
                                           ____________________________________
                                           Name:
                                           Title:<PAGE>

                                                                    Exhibit 10.7

================================================================================

                                    Form of
                                $2,500,000,000
                     FIVE-YEAR REVOLVING CREDIT AGREEMENT

                                  dated as of

                                March 30, 2001

                                     among

                                  NNG, INC.,

                         NORTHROP GRUMMAN CORPORATION,

                           LITTON INDUSTRIES, INC.,

                           The Lenders Party Hereto,

                           THE CHASE MANHATTAN BANK

                                      and

                          CREDIT SUISSE FIRST BOSTON,
                          as Co-Administrative Agents

                                      and

                           THE CHASE MANHATTAN BANK
                               as Payment Agent
                          ___________________________

                          SALOMON SMITH BARNEY INC.,
                             as Syndication Agent

                            THE BANK OF NOVA SCOTIA
                                      and
                       DEUTSCHE BANC ALEX. BROWN, INC.,
                          as Co-Documentation Agents

                           JP MORGAN, a division of
                             CHASE SECURITIES INC.
                                      and
                          CREDIT SUISSE FIRST BOSTON,
                 as Joint Lead Arrangers and Joint Bookrunners
================================================================================
<PAGE>

                               TABLE OF CONTENTS

<TABLE>
<CAPTION>
                                                                                                      Page
                                                                                                      ----
                                                  ARTICLE I

                                                 Definitions
<S>                                                                                                   <C>
SECTION 1.01.  Defined Terms.........................................................................    2
SECTION 1.02.  Classification of Loans and Borrowings................................................   19
SECTION 1.03.  Terms Generally.......................................................................   19
SECTION 1.04.  Accounting Terms; GAAP................................................................   19

                                                  ARTICLE II

                                                  The Credits

SECTION 2.01.  Commitments...........................................................................   20
SECTION 2.02.  Revolving Loans and Revolving Borrowings..............................................   20
SECTION 2.03.  Requests for Revolving Borrowings.....................................................   21
SECTION 2.04.  Competitive Bid Procedure.............................................................   22
SECTION 2.05.  Funding of Revolving Borrowings.......................................................   24
SECTION 2.06.  Interest Elections....................................................................   24
SECTION 2.07.  Termination and Reduction of Commitments..............................................   26
SECTION 2.08.  Repayment of Loans; Evidence of Debt..................................................   26
SECTION 2.09.  Prepayment of Revolving Loans.........................................................   27
SECTION 2.10.  Fees..................................................................................   27
SECTION 2.11.  Interest..............................................................................   28
SECTION 2.12.  Alternate Rate of Interest............................................................   29
SECTION 2.13.  Increased Costs.......................................................................   30
SECTION 2.14.  Break Funding Payments................................................................   31
SECTION 2.15.  Taxes.................................................................................   31
SECTION 2.16.  Payments Generally; Pro Rata Treatment; Sharing of Setoffs............................   32
SECTION 2.17.  Mitigation Obligations; Replacement of Lenders........................................   34

                                                  ARTICLE III

                                        Representations and Warranties

SECTION 3.01.  Corporate Existence...................................................................   35
SECTION 3.02.  Certain Financial Information.........................................................   35
SECTION 3.03.  Litigation............................................................................   36
SECTION 3.04.  No Breach.............................................................................   36
SECTION 3.05.  Corporate Action......................................................................   37
SECTION 3.06.  Approvals.............................................................................   37
SECTION 3.07.  Use of Proceeds, Etc..................................................................   37
SECTION 3.08.  ERISA.................................................................................   37
SECTION 3.09.  Taxes.................................................................................   37
SECTION 3.10.  Funded Debt...........................................................................   38
</TABLE>
<PAGE>

                                                                               2

<TABLE>
<S>                                                                                                   <C>
SECTION 3.11.  Properties............................................................................   38
SECTION 3.12.  Environmental Matters.................................................................   38
SECTION 3.13.  True and Complete Disclosure..........................................................   39
SECTION 3.14.  Acquisition...........................................................................   39
SECTION 3.15.  Intercompany Indebtedness.............................................................   40

                                                  ARTICLE IV

                                                  Conditions

SECTION 4.01.  Effective Date........................................................................   39

                                                  ARTICLE V

                                             Affirmative Covenants

SECTION 5.01.  Financial Statements..................................................................   42
SECTION 5.02.  Existence, Payment of Taxes, ERISA, Etc...............................................   44
SECTION 5.03.  Notice of Litigation..................................................................   44
SECTION 5.04.  Insurance.............................................................................   45
SECTION 5.05.  Access to Books and Properties........................................................   45
SECTION 5.06.  Ratings by Moody's and S&P............................................................   45

                                                 ARTICLE VI

                                             Negative Covenants

SECTION 6.01.  Restricted Payments...................................................................   45
SECTION 6.03.  Guarantees............................................................................   46
SECTION 6.04.  Fundamental Changes and Acquisitions..................................................   47
SECTION 6.05.  Limitation on Liens...................................................................   48
SECTION 6.06.  Investments...........................................................................   49
SECTION 6.07.  Indebtedness..........................................................................   50
SECTION 6.08.  Leverage Ratio........................................................................   51
SECTION 6.09.  Funded Debt to Consolidated EBITDA Ratio..............................................   51
SECTION 6.10.  Fixed Charge Coverage Ratio...........................................................   52
SECTION 6.11.  Use of Proceeds.......................................................................   52
SECTION 6.12.  Margin Stock..........................................................................   52
SECTION 6.13.  Interest Rate Protection Agreements...................................................   52
SECTION 6.14.  Modifications of Certain Documents....................................................   52
SECTION 6.15.  Subsidiary Equity Issuance............................................................   53

                                                 ARTICLE VII

Events of Default....................................................................................   53

                                                 ARTICLE VIII
The Agents...........................................................................................   56

                                                  ARTICLE IX
</TABLE>
<PAGE>

                                                                               3

<TABLE>
<S>                                                                                                   <C>
Joint and Several Liability of Borrowers.............................................................   59

                                             ARTICLE X

                                           Miscellaneous

SECTION 10.01.  Notices..............................................................................   60
SECTION 10.02.  Waivers; Amendments..................................................................   61
SECTION 10.03.  Expenses; Indemnity; Damage Waiver...................................................   61
SECTION 10.04.  Successors and Assigns; Joint and Several Obligations................................   62
SECTION 10.05.  Survival.............................................................................   65
SECTION 10.06.  Counterparts; Integration; Effectiveness.............................................   65
SECTION 10.07.  Severability.........................................................................   66
SECTION 10.08.  Right of Setoff......................................................................   66
SECTION 10.09.  Governing Law; Jurisdiction; Consent to Service of Process...........................   66
SECTION 10.10.  WAIVER OF JURY TRIAL.................................................................   67
SECTION 10.11.  Headings.............................................................................   67
SECTION 10.12.  Confidentiality......................................................................   67
SECTION 10.13.  Interest Rate Limitation.............................................................   68
</TABLE>
<PAGE>

                                                                               4

SCHEDULES:
----------

Schedule 1.01(a)        -   Refinanced Debt
Schedule 2.01           -   Commitments
Schedule 3.03           -   Material Litigation
Schedule 3.06           -   Government Approvals
Schedule 6.07           -   Outstanding Indebtedness After Giving Effect to the
                            Acquisition

EXHIBITS:
---------

Exhibit A               -   Form of Assignment and Acceptance
Exhibit B-1             -   Form of Opinion of Sheppard, Mullin, Richter &
                            Hampton LLP, counsel for the Borrowers
Exhibit B-2             -   Form of Opinion of John Mullan, Assistant General
                            Counsel of Northrop Grumman Corporation
Exhibit B-3             -   Form of Opinion of W. Burks Terry, General Counsel
                            of Litton Industries, Inc.
Exhibit B-4             -   Form of Opinion of Kaye, Scholer LLP, special New
                            York counsel for the Borrowers
Exhibit C               -   Form of Note
Exhibit D               -   Form of Confidentiality Agreement
<PAGE>

                         FIVE-YEAR CREDIT AGREEMENT dated as of March 30, 2001,
                    among NNG, INC., a Delaware corporation (the "Company");
                    NORTHROP GRUMMAN CORPORATION, a Delaware corporation
                    ("Northrop Operating"); at all times after it shall have
                    become a subsidiary of the Company, LITTON INDUSTRIES, INC.,
                    a Delaware corporation ("Litton Operating" and, together
                    with the Company and Northrop Operating, the "Borrowers");
                    the LENDERS party hereto, THE CHASE MANHATTAN BANK and
                    CREDIT SUISSE FIRST BOSTON, as Co-Administrative Agents,
                    SALOMON SMITH BARNEY INC., as Syndication Agent, and THE
                    BANK OF NOVA SCOTIA and DEUTSCHE BANC ALEX. BROWN INC. as
                    Co-Documentation Agents.

               The Company intends to acquire (the "Acquisition") Litton
Operating pursuant to the Amended and Restated Agreement and Plan of Merger
dated as of January 23, 2001 (the "Merger Agreement"), among Northrop Operating,
LII Acquisition, Inc. ("Litton Merger Sub") and Litton Operating. Pursuant to
the Merger Agreement, Litton Merger Sub has made an offer (the "Exchange Offer")
to acquire all the issued and outstanding capital stock of Litton Operating for
consideration consisting of (a) in the case of Litton Operating's common stock,
at the election of the holders thereof and subject to certain other conditions
and adjustments, (i) $80.25 per common share, net to the Seller in cash, and/or
(ii) a combination of new common stock of the Company (approximately 13,000,000
shares in the aggregate) and/or new preferred stock of the Company (valued at up
to $350,000,000 in the aggregate) and (b) in the case of Litton Operating's
preferred stock, $35 per share, net to the Seller in cash. Immediately prior to
the consummation of the Exchange Offer, the Company will cause a newly formed,
wholly-owned subsidiary ("Northrop Merger Sub") to merge (the "Northrop Merger")
with and into Northrop Operating, as consideration for which the existing
stockholders of Northrop Operating will receive common stock of the Company. As
promptly as practicable following the consummation of the Exchange Offer, (i)
Litton Merger Sub will merge with and into Litton Operating (the "Litton Merger"
and, together with the Northrop Merger, the "Mergers") in a transaction in
which, subject to stockholders' dissent rights, each issued and outstanding
share of common stock of Litton Operating not acquired in the Exchange Offer
will be converted into the right to receive $80.25 per common share in cash and
(ii) Litton Operating will become a party to this Agreement as a Borrower. The
aggregate consideration payable to the stockholders of Litton Operating in the
Acquisition will be approximately not greater than $4,000,000,000 in cash and
stock. In connection and substantially concurrent with the Acquisition, Northrop
Operating and Litton Operating will repay all amounts outstanding under, and
terminate, their primary existing bank credit agreements (the "Existing Credit
Agreements") and repay the Refinanced Debt.
<PAGE>

                                                                               2

          The parties hereto agree as follows:

                                   ARTICLE I

                                  Definitions

          SECTION 1.01.  Defined Terms. As used in this Agreement, the
following terms have the meanings specified below:

          "ABR", when used in reference to any Revolving Loan or Revolving
Borrowing, refers to whether such Revolving Loan, or the Revolving Loans
comprising such Revolving Borrowing, are bearing interest at a rate determined
by reference to the Alternate Base Rate.

          "Acquisition" has the meaning assigned to such term in the preamble to
this Agreement.

          "Adjusted LIBO Rate" means, with respect to any Eurodollar Revolving
Borrowing for any Interest Period, an interest rate per annum (rounded upwards,
if necessary, to the next 1/16 of 1%) equal to (a) the LIBO Rate for such
Interest Period multiplied by (b) the Statutory Reserve Rate.

          "Administrative Questionnaire" means an Administrative Questionnaire
in a form supplied by the Payment Agent.

          "Affiliate" means, with respect to a specified Person, another Person
that directly, or indirectly through one or more intermediaries, Controls or is
Controlled by or is under common Control with the Person specified.

          "Agents" means, collectively, the Co-Administrative Agents and the
Payment Agent.

          "Alternate Base Rate" means, for any day, a rate per annum equal to
the greater of (a) the Prime Rate in effect on such day and (b) the Federal
Funds Effective Rate in effect on such day plus  1/2 of 1%.  Any change in the
Alternate Base Rate due to a change in the Prime Rate or the Federal Funds
Effective Rate shall be effective from and including the effective date of such
change in the Prime Rate or the Federal Funds Effective Rate, respectively.

          "Applicable Percentage" means, with respect to any Lender, the
percentage of the total Commitments represented by such Lender's Commitment.  If
the Commitments have terminated or expired, the Applicable Percentages shall be
determined based upon the Commitments most recently in effect, giving effect to
any assignments.

          "Applicable Rate" means, for any day, with respect to any Eurodollar
Revolving Loan or ABR Loan, or with respect to the facility fees payable
hereunder, as the case may be, the
<PAGE>

                                                                               3

applicable rate per annum set forth below under the caption "Eurodollar Spread",
"ABR Spread" or "Facility Fee Rate", as the case may be, based upon the ratings
by Moody's and S&P, respectively, applicable on such date to the Senior Long
Term Debt:

----------------------------------------------------------------------
         Senior Long Term               Facility  Eurodollar   ABR
           Debt Ratings                 Fee Rate   Spread     Spread
----------------------------------------------------------------------
 Category 1                             0.150%      0.600%    0.000%
 BBB+ or higher or Baal or higher
----------------------------------------------------------------------
 Category 2                             0.175%      0.825%    0.000%
 BBB or Baa2, and no other
  Category applies
----------------------------------------------------------------------
 Category 3                             0.225%      1.025%    0.025%
 BBB- and Baa3
----------------------------------------------------------------------
 Category 4                             0.375%      1.125%    0.125%
 BBB- and Ba1 or BB+ and Baa3
----------------------------------------------------------------------
 Category 5                             0.425%      1.325%    0.325%
 BB+ and Ba1
----------------------------------------------------------------------
 Category 6                             0.500%      1.750%    0.750%
 Lower than BB+ or lower
 than Ba1
----------------------------------------------------------------------

If either Moody's or S&P shall not have in effect a rating for the Senior Long
Term Debt, then the Company and the Co-Administrative Agents shall endeavor in
good faith to agree upon a Substitute Rating Agency and the ratings of such
Substitute Rating Agency corresponding to the ratings of Moody's or S&P, as the
case may be, in each of the Categories in the table above, and following such
agreement the Applicable Rate shall be determined by substituting the ratings of
such Substitute Rating Agency applicable to the Senior Long Term Debt for the
ratings of Moody's or S&P, as the case may be, in the table above; provided,
that (a) a single Substitute Rating Agency may not be substituted pursuant to
this sentence for both Moody's and S&P and (b) until the Company and the Co-
Administrative Agents shall have reached agreement on the matters referred to in
this sentence, the Applicable Rate shall be determined by reference to the
single available rating by Moody's or S&P, as the case may be (or, if there is
no available rating, the rating most recently in effect).  If the ratings
established or deemed to have been established by Moody's and S&P (or a
Substitute Rating Agency) for the Senior Long Term Debt shall be changed (other
than as a result of a change in the rating system of Moody's or S&P (or a
Substitute Rating Agency)), such change shall be effective as of the date on
which it is first announced by the applicable rating agency.  Each change in the
Applicable Rate shall apply during the period commencing on the effective date
of such change and ending on the date immediately preceding the effective date
of the next such change.  If the rating system of Moody's or S&P or an
applicable Substitute Rating Agency shall change, the Company and the Lenders
shall negotiate in good faith to amend this definition to reflect such changed
rating system and, pending the effectiveness of any
<PAGE>

                                                                               4

such amendment, the Applicable Rate shall be determined by reference to the
rating most recently in effect from such rating agency prior to such change.

          "Assignment and Acceptance" means an assignment and acceptance entered
into by a Lender and an assignee (with the consent of any party whose consent is
required by Section 10.04), and accepted by the Payment Agent, in the form of
Exhibit A or any other form approved by the Payment Agent and the Borrowers.

          "Availability Period" means the period from and including the
Effective Date to but excluding the earlier of the Maturity Date and the date of
termination of the Commitments.

          "Bankruptcy Code" means the Federal Bankruptcy Code of 1978, as
amended from time to time.

          "Board" means the Board of Governors of the Federal Reserve System of
the United States of America.

          "Borrowers" means Northrop Operating and the Company and, from and
after its execution of this Agreement as provided in Section 10.14, Litton
Operating.

          "Borrowing" means a group of Loans of the same type, made, converted
or continued on the same date and, in the case of Eurodollar Loans or Fixed Rate
Loans, as to which a single Interest Period applies.

          "Business Day" means any day that is not a Saturday, Sunday or other
day on which commercial banks in New York City are authorized or required by law
to remain closed; provided that, when used in connection with a Eurodollar Loan,
the term "Business Day" shall also exclude any day on which banks are not open
for dealings in dollar deposits in the London interbank market.

          "Capital Expenditures" means, for any period, expenditures (including,
without limitation, the aggregate amount of Capital Lease Obligations incurred
during such period) made by the Company or any of the Subsidiaries to acquire or
construct fixed assets, plant and equipment (including renewals, improvements
and replacements, but excluding repairs) during such period computed in
accordance with GAAP.

          "Capital Lease Obligations" of any Person means the obligations of
such Person to pay rent or other amounts under any lease of (or other
arrangement conveying the right to use) Property, which obligations are required
to be classified and accounted for as capital leases on a balance sheet of such
Person under GAAP, and the amount of such obligations shall be the capitalized
amount thereof determined in accordance with GAAP.

          "Change in Law" means (a) the adoption of any law, rule or regulation
after the date of this Agreement, (b) any change in any law, rule or regulation
or in the interpretation or application thereof by any Governmental Authority
after the date of this Agreement or (c) compliance by any Lender (or, for
purposes of Section 2.13(b), by any lending office of such
<PAGE>

                                                                               5

Lender or by such Lender's holding company, if any) with any request, guideline
or directive (whether or not having the force of law) of any Governmental
Authority made or issued after the date of this Agreement.

          "Chase" means The Chase Manhattan Bank and its successors.

          "Class", when used in reference to any Loan or Borrowing, refers to
whether such Loan, or the Loans comprising such Borrowing, are Revolving Loans
or Competitive Loans.

          "Co-Administrative Agents" means Chase and CSFB, in their capacities
as co-administrative agents for the Lenders hereunder, or any successors,
thereto appointed in accordance with Article VIII.

          "Code" means the Internal Revenue Code of 1986, as amended from time
to time.

          "Commitment" means, with respect to each Lender, the commitment of
such Lender to make Revolving Loans hereunder, expressed as an amount
representing the maximum aggregate permitted amount of such Lender's Revolving
Credit Exposure hereunder, as such commitment may be (a) reduced from time to
time pursuant to Section 2.07 and (b) reduced or increased from time to time
pursuant to assignments by or to such Lender pursuant to Section 10.04.  The
initial amount of each Lender's Commitment is set forth on Schedule 2.01, or in
the Assignment and Acceptance pursuant to which such Lender shall have assumed
its Commitment, as applicable.

          "Company" has the meaning assigned to such term in the preamble to
this Agreement.

          "Competitive Bid" means an offer by a Lender to make a Competitive
Loan in accordance with Section 2.04.

          "Competitive Bid Rate" means, with respect to any Competitive Bid, the
Margin or the Fixed Rate, as applicable, offered by the Lender making such
Competitive Bid.

          "Competitive Bid Request" means a request by a Borrower for
Competitive Bids in accordance with Section 2.04.

          "Competitive Loan" means a loan made pursuant to Section 2.04.

          "Competitive Loan Exposure" means, with respect to any Lender at any
time, the aggregate principal amount of the outstanding Competitive Loans of
such Lender.

          "Consolidated EBITDA" means, for any period, Consolidated Net Income
for such period plus, without duplication and to the extent deducted in
determining such Net Income, the sum of (i) Interest Expense for such period,
(ii) consolidated income tax expense for such period, (iii) all amounts
attributable to depreciation and amortization for such period, (iv) any noncash
charges for such period and (v) fees and expenses incurred in connection with
the Transactions,
<PAGE>

                                                                               6

minus, without duplication and to the extent included in determining such Net
Income, any noncash income for such period.

          "Consolidated Net Income" means, for the Company and the Subsidiaries
(determined on a consolidated basis in accordance with GAAP) for any fiscal
period, an amount equal to the consolidated net income of the Company and its
Subsidiaries for such fiscal period.

          "Consolidated Net Income Available for Restricted Payments" means an
amount equal to (i) the sum of $300,000,000 plus 80% (or minus 100% in case of
consolidated net loss) of Consolidated Net Income for the period (taken as one
accounting period) commencing January 1, 2001 and terminating on the Fiscal Date
immediately preceding the date of any proposed Restricted Payment, less (ii) the
sum of (A) the aggregate amount of all dividends (other than dividends payable
solely in stock of the Company) and other distributions paid or declared by the
Company (for all periods on or after the Effective Date) or either Northrop
Operating or Litton Operating (for the period from January 1, 2001 through the
Effective Date) on any class of its stock and (B) the excess (if any) of the
aggregate amount expended, directly or indirectly, by the Company (for all
periods on or after the Effective Date) or by either Northrop Operating or
Litton Operating (for the period from January 1, 2001 through the Effective
Date) for the redemption, purchase or other acquisition of any shares of its
stock, over the aggregate net amount of any cash or cash equivalents received by
the Company on and after said date as consideration for the sale of any shares
of its stock.

          "Consolidated Stockholders' Equity" means the amount of stockholders'
equity of the Company and the Subsidiaries (determined on a consolidated basis
in accordance with GAAP).

          "Consolidating Financial Statements" means, for any fiscal period, the
unaudited consolidating statements of financial position and income for the
corporate office and principal operating centers of the Company and the
Subsidiaries substantially in the form of the consolidating financial statements
for such corporate office and principal operating centers as at and for Northrop
Operating's fiscal year ended December 31, 1999 heretofore delivered to the
Lenders.

          "Control" means the possession, directly or indirectly, of the power
to direct or cause the direction of the management or policies of a Person,
whether through the ability to exercise voting power, by contract or otherwise.
"Controlling" and "Controlled" have meanings correlative thereto.

          "CSFB" means Credit Suisse First Boston and its successors.

          "Debt Service" means, for any period, the sum, for the Company and the
Subsidiaries (determined on a consolidated basis in accordance with GAAP), of
the following: (a) all regularly scheduled payments of principal of Indebtedness
(including, without limitation, the principal component of any payments in
respect of Capital Lease Obligations but excluding amounts repaid under Working
Capital Credit Lines) made during such period plus (b) all Interest Expense for
such period.
<PAGE>

                                                                               7

          "Default" means any event or condition which constitutes an Event of
Default or which with notice, passage of time or both would become an Event of
Default.

          "Disbursement Account" means the Company's account (910-2-475762) with
the Payment Agent, or, at any time, any other account of the Company with the
Payment Agent that shall have been designated in a notice delivered by the
Company to the Payment Agent not fewer than three Business Days prior to such
time.

          "Dollars" or "$" refers to lawful money of the United States of
America.

          "Effective Date" means the date on which the conditions specified in
Section 4.01 are satisfied (or waived in accordance with Section 10.02).

          "Environmental Laws" means any and all Federal, state, local and
foreign laws, rules or regulations, and any orders or decrees, in each case as
now or hereafter in effect, relating to the regulation or protection of human
health, safety or the environment or to emissions, discharges, releases or
threatened releases of pollutants, contaminants, chemicals or toxic or hazardous
substances or wastes into the indoor or outdoor environment, including, without
limitation, ambient air, soil, surface water, ground water, wetlands, land or
subsurface strata, or otherwise relating to the manufacture, processing,
distribution, use, treatment, storage, disposal, transport or handling of
pollutants, contaminants, chemicals or toxic or hazardous substances or wastes.

          "Equity" means (i) any capital stock or any warrants, options or
rights exercisable in respect of capital stock, including any capital stock
issued upon the exercise of any such warrants, options or rights (other than any
capital stock, warrants, options or rights issued to directors, officers or
employees of the Company or any of the Subsidiaries pursuant to employee benefit
plans, stock option plans or long-term incentive plans established in the
ordinary course of business and any capital stock of the Company issued upon the
exercise of such warrants, options or rights) or (ii) any other security or
instrument representing an equity interest in the Company or any of the
Subsidiaries.

          "Equity Issuance" means (a) any issuance or sale (including any
issuance or sale as a result of a conversion or exchange of debt securities) by
the Company or any Subsidiary of Equity or (b) the receipt by the Company of any
capital contribution (whether or not evidenced by any equity security issued by
the Company) other than (i) any issuance of Equity of the Company to the former
stockholders of Litton Operating in connection with the Acquisition, (ii) any
issuance of Equity to, or receipt of any such capital contribution from, the
Company or a Subsidiary and (iii) any issuance of Equity of the Company to
employees, officers or directors of the Company and the Subsidiaries pursuant to
employee stock options or employee benefit plans in effect from time to time.

          "ERISA" means the Employee Retirement Income Security Act of 1974, as
amended from time to time.
<PAGE>

                                                                               8

          "ERISA Affiliate" means any corporation or trade or business which is
a member of the same controlled group of corporations (within the meaning of
Section 414(b) of the Code) as the Company or is under common control (within
the meaning of Section 414(c) of the Code) with the Company.

          "Eurodollar", when used in reference to any Loan or Borrowing, refers
to whether such Loan, or the Loans comprising such Borrowing, are bearing
interest at a rate determined by reference to the Adjusted LIBO Rate or, in the
case of Competitive Loans, the LIBO Rate.

          "Event of Default" has the meaning assigned to such term in Article
VII.

          "Exchange Act" means the Securities Exchange Act of 1934, together
with the Rules and Regulations of the SEC thereunder.

          "Exchange Offer" has the meaning assigned to such term in the preamble
to this Agreement.

          "Excluded Taxes" means, with respect to any Lender or any other
recipient of any payment to be made by or on account of any obligation of a
Borrower hereunder, (a) income or franchise taxes imposed on (or measured by)
its net income by the United States of America, or by the jurisdiction under the
laws of which such recipient is organized or in which its principal office is
located or, in the case of any Lender, in which its applicable lending office is
located, (b) any branch profits taxes imposed by the United States of America or
any similar tax imposed by any other jurisdiction described in clause (a) above
and (c) in the case of a Foreign Lender (other than an assignee pursuant to a
request by a Borrower under Section 2.17(b)), any withholding tax imposed by the
United States of America that (i) is in effect and would apply to amounts
payable to such Foreign Lender at the time such Foreign Lender becomes a party
to this Agreement (or designates a new lending office), except to the extent
that such Foreign Lender (or its assignor, if any) was entitled, at the time of
designation of a new lending office (or assignment), to receive additional
amounts from a Borrower with respect to any withholding tax pursuant to Section
2.15, or (ii) is attributable to such Foreign Lender's failure to comply with
Section 2.15(e).

          "Existing Credit Agreements" means, with respect to Northrop
Operating, the Credit Agreement dated as of April 15, 1994, as amended by an
Amended and Restated Credit Agreement dated as of March 1, 1996 and a Second
Amended and Restated Credit Agreement dated as of November 1, 1996, as amended,
among Northrop Operating, Chase, Chase Securities Inc. and Bank of America
National Trust and Savings Association and, with respect to Litton Operating,
the 364-Day and Five-Year Credit Agreements dated as of March 22, 2000 among
Litton Industries, Inc. and Morgan Guaranty Trust Company of New York.

          "Federal Funds Effective Rate" means, for any day, the weighted
average (rounded upwards, if necessary, to the next 1/100 of 1%) of the rates on
overnight Federal funds transactions with members of the Federal Reserve System
arranged by Federal funds brokers, as published on the next succeeding Business
Day by the Federal Reserve Bank of New York, or, if such rate is not so
published for any day that is a Business Day, the average (rounded upwards, if
<PAGE>

                                                                               9

necessary, to the next 1/100 of 1%) of the quotations for such day for such
transactions received by the Payment Agent from three Federal funds brokers of
recognized standing selected by it.

          "Financial Officer" means any of the chief financial officer,
principal accounting officer, treasurer, assistant treasurer, or controller of
the Company.

          "Fiscal Dates" means the last day of each March, June, September and
December in each year, the first of which shall be the first such day after the
date hereof.

          "Fixed Charge Coverage Ratio" means, at any Fiscal Date, the ratio of
(a) the sum of (i) Consolidated EBITDA for the period of four consecutive fiscal
quarters of the Company ending on such date minus (ii) Capital Expenditures
during such period to (b) the sum of (i) Interest Expense for such period plus
(ii) Restricted Payments made by the Company or, prior to the Northrop Merger,
by Northrop Operating during such period.

          "Fixed Rate" means, with respect to any Competitive Loan (other than a
Eurodollar Competitive Loan), the fixed rate of interest per annum specified by
the Lender making such Competitive Loan in its related Competitive Bid.

          "Fixed Rate Loan" means a Competitive Loan bearing interest at a Fixed
Rate.

          "Foreign Lender" means any Lender that is organized under the laws of
a jurisdiction other than the United States of America, a State thereof or the
District of Columbia.

          "Funded Debt" means any Indebtedness of the Company or any Subsidiary
for borrowed money or the deferred purchase price of Property which is shown on
the consolidated financial statements of the Company as a liability, in any
event including (a) Capital Lease Obligations and (b) Guarantees which are
deemed Funded Debt under Section 6.03 hereof but excluding (i) items customarily
reflected as current liabilities and classified as other than debt (it being
understood that progress payments, trade accounts payable, obligations under
leases which are not capitalized leases and income taxes payable are excluded
from "Funded Debt" under this definition) and (ii) deferred income taxes minus
cash and cash equivalents of the Company and its Subsidiaries.

          "Funded Debt to Consolidated EBITDA Ratio" means, at any Fiscal Date,
the ratio of (a) Funded Debt as at such date to (b) Consolidated EBITDA for the
period of four consecutive fiscal quarters of the Company ending on such date.

          "GAAP" means generally accepted accounting principles in the United
States of America, applied in accordance with Section 1.04.

          "Government" means the United States of America or any department or
agency thereof.

          "Governmental Authority" means the government of the United States of
America, any other nation or any political subdivision thereof, whether state or
local, and any agency,
<PAGE>

                                                                              10

authority, instrumentality, regulatory body, court, central bank or other entity
exercising executive, legislative, judicial, taxing, regulatory or
administrative powers or functions of or pertaining to government.

          "Granting Lender" has the meaning assigned to such term in Section
10.04.

          "Guarantee" means, with respect to any Person, a guarantee, an
endorsement, a contingent agreement to purchase or to furnish funds for the
payment or maintenance of, or otherwise to be or become contingently liable
under or with respect to, the Indebtedness, other obligations, net worth,
working capital or earnings of any other Person, or a guarantee of the payment
of dividends or other distributions upon the stock or equity interests of any
other Person, or an agreement to purchase, sell or lease (as lessee or lessor)
Property, products, materials, supplies or services primarily for the purpose of
enabling any other Person to make payment of its obligations or an agreement to
assure a creditor of such Person against loss, and including, without
limitation, causing a bank or other financial institution to issue a standby
letter of credit or other similar instrument supporting the obligations of
another Person, but excluding endorsements for collection or deposit in the
ordinary course of business.  The amount of any Guarantee in respect of
Indebtedness shall be deemed to be an amount equal to the stated or determinable
amount of the related Indebtedness (unless the Guarantee is limited by its terms
to a lesser amount, in which case, to the extent of such amount) or, if not
stated or determinable, the maximum reasonably anticipated liability in respect
thereof as determined by such Person in good faith.  The terms "Guarantee" and
"Guaranteed" used as a verb shall have a correlative meaning.

          "Indebtedness" means, for any Person:  (a) obligations created, issued
or incurred by such Person for borrowed money (whether by loan, the issuance and
sale of debt securities or the sale of Property to another Person subject to an
understanding or agreement, contingent or otherwise, to repurchase such Property
from such Person); (b) obligations of such Person to pay the deferred purchase
or acquisition price of Property or services, other than trade accounts payable
(other than for borrowed money) arising, and accrued expenses incurred, in the
ordinary course of business so long as such trade accounts payable are payable
within 180 days of the date the respective goods are delivered or the respective
services are rendered; (c) indebtedness of others secured by a Lien on the
Property of such Person, whether or not the respective Indebtedness so secured
has been assumed by such Person (but only to the extent of the fair market value
of such Property if not assumed by such Person); (d) obligations (contingent or
otherwise) in respect of letters of credit, banker's acceptances and similar
instruments issued or accepted for the account of such Person; (e) Capital Lease
Obligations of such Person; and (f) Guarantees by such Person of Indebtedness of
others.

          "Indemnified Taxes" means Taxes other than Excluded Taxes.

          "Indemnitee" has the meaning assigned to such term in Section
10.03(b).

          "Information Memorandum" means the Confidential Information Memorandum
dated January 2001 relating to the Borrowers and the Acquisition.
<PAGE>

                                                                              11

          "Interest Election Request" means a request by a Borrower to convert
or continue a Revolving Borrowing in accordance with Section 2.06.

          "Interest Expense" means, for any period, the sum, without
duplication, for the Company and the Subsidiaries (determined on a consolidated
basis in accordance with GAAP), of the following: (a) all interest in respect of
Funded Debt (including, without limitation, the interest component of any
payments in respect of Capital Lease Obligations) accrued or capitalized during
such period (whether or not actually paid during such period) plus (b) the net
amount payable (or minus the net amount receivable) under Interest Rate
Protection Agreements during such period (whether or not actually paid or
received during such period) minus (c) all interest income accrued during such
period (whether or not actually received during such period).

          "Interest Payment Date" means (a) with respect to any ABR Loan, each
Fiscal Date, (b) with respect to any Eurodollar Loan, the last day of the
Interest Period applicable to the Borrowing of which such Loan is a part and, in
the case of a Eurodollar Borrowing with an Interest Period of more than three
months' duration, each day prior to the last day of such Interest Period that
occurs at intervals of three months' duration after the first day of such
Interest Period and (c) with respect to any Fixed Rate Loan, the last day of the
Interest Period applicable to the Borrowing of which such Loan is a part and, in
the case of a Fixed Rate Borrowing with an Interest Period of more than 90 days'
duration (unless otherwise specified in the applicable Competitive Bid Request),
each day prior to the last day of such Interest Period that occurs at intervals
of 90 days' duration after the first day of such Interest Period, and any other
dates that are specified in the applicable Competitive Bid Request as Interest
Payment Dates with respect to such Borrowing.

          "Interest Period" means (a) with respect to any Eurodollar Borrowing,
the period commencing on the date of such Borrowing and ending on the
numerically corresponding day in the calendar month that is one, two, three or
six months thereafter, as the applicable Borrower may elect, or any other period
agreed to by such Borrower and each Lender, and (b) with respect to any Fixed
Rate Borrowing, the period (which shall not be less than 7 days or more than 360
days) commencing on the date of such Borrowing and ending on the date specified
in the applicable Competitive Bid Request; provided, that (i) if any Interest
Period would end on a day other than a Business Day, such Interest Period shall
be extended to the next succeeding Business Day unless, such next succeeding
Business Day would fall in the next calendar month, in which case such Interest
Period shall end on the immediately preceding Business Day, and (ii) any
Interest Period that commences on the last Business Day of a calendar month (or
on a day for which there is no numerically corresponding day in the last
calendar month of such Interest Period) shall end on the last Business Day of
the last calendar month of such Interest Period.  For purposes hereof, the date
of a Borrowing initially shall be the date on which such Borrowing is made and
thereafter shall be the effective date of the most recent conversion or
continuation of such Borrowing.

          "Interest Rate Protection Agreement" means, for any Person, an
interest rate swap, cap or collar agreement or similar arrangement between such
Person and one or more financial institutions providing for the transfer or
mitigation of interest rate risks either generally or under specific
contingencies and entered into as bona fide hedges (and not for speculative
purposes) against such interest rate risks.
<PAGE>

                                                                              12

          "Investment" means, for any Person:  (a) the acquisition (whether for
cash, Property, services or securities or otherwise) of capital stock, bonds,
notes, debentures or other debt obligations, partnership or other ownership
interests or other securities of any other Person or any agreement to make any
such acquisition (including, any "short sale" or any sale of any securities at a
time when such securities are not owned by the Person entering into such sale);
(b) the making of any deposit with, or advance, loan or other extension of
credit to, any other Person (including the purchase of Property from another
Person subject to an understanding or agreement, contingent or otherwise, to
resell such Property to such Person), but excluding any such advance, loan or
extension of credit having a term not exceeding 180 days arising in connection
with the sale of inventory or supplies by such Person in the ordinary course of
business; or (c) the entering into of any Guarantee of, or other contingent
obligation with respect to, Indebtedness or other liability of any other Person
and (without duplication) any amount committed to be advanced, lent or extended
to such Person.

          "Investment Grade Rating Period" means, after (i) the consummation of
the Acquisition (or the express statement by Moody's and S&P that the same has
been taken into account in reaffirming or announcing the ratings referred to in
clause (ii) below) and (ii) the date after the date hereof on which both Moody's
and S&P shall have first either reaffirmed or announced revised ratings for the
Senior Long Term Debt, any period during which the rating of the Senior Long
Term Debt is BBB- or higher by S&P (or a Substitute Rating is at the
corresponding rating level or higher) and Baa3 or higher by Moody's (or a
Substitute Rating is at the corresponding rating level or higher).

          "Lenders" means the Persons listed on Schedule 2.01 and any other
Person that shall have become a party hereto pursuant to an Assignment and
Acceptance in compliance with Section 10.04, other than any such Person that
shall have ceased to be a party hereto pursuant to an Assignment and Acceptance.

          "Leverage Ratio" means, at any Fiscal Date, the ratio of (a) the
aggregate amount (determined without duplication on a consolidated basis) of all
Funded Debt outstanding at such time to (b) the sum of (i) Consolidated
Stockholders' Equity at such time plus (ii) all Funded Debt outstanding at such
time.

          "LIBO Rate" means, with respect to any Eurodollar Borrowing for any
Interest Period, the rate appearing on Page 3750 of the Telerate Service (or on
any successor or substitute page of such Service, or any successor to or
substitute for such Service, providing rate quotations comparable to those
currently provided on such page of such Service, as determined by the Payment
Agent from time to time for purposes of providing quotations of interest rates
applicable to dollar deposits in the London interbank market) at approximately
11:00 a.m., London time, two Business Days prior to the commencement of such
Interest Period, as the rate for dollar deposits with a maturity comparable to
such Interest Period.  In the event that such rate is not available at such time
for any reason, then the "LIBO Rate" with respect to such Eurodollar Borrowing
for such Interest Period shall be the rate at which dollar deposits of
$5,000,000 and for a maturity comparable to such Interest Period are offered by
the principal London office of the Payment Agent in immediately available funds
in the London interbank market at approximately 11:00 a.m., London time, two
Business Days prior to the commencement of such Interest Period.
<PAGE>

                                                                              13

          "Lien" means, with respect to any asset, any mortgage, lien, pledge,
charge, security interest or encumbrance of any kind in respect of such asset.
The term "Lien" shall not include the ownership interests in receivables
acquired by a purchaser under a Permitted Receivables Sale Agreement.

          "Litton Operating" means Litton Industries, Inc.

          "Litton Merger" has the meaning assigned to such term in the preamble
to this Agreement.

          "Litton Merger Sub" has the meaning assigned to such term in the
preamble to this Agreement.

          "Litton Operating Senior Indentures" means the Indenture dated as of
December 15, 1991, between Litton Operating and The Bank of New York, as trustee
and the Indenture dated as of April 13, 1998, between Litton Operating and The
Bank of New York, as trustee.

          "Loan" means a Revolving Loan or a Competitive Loan.

          "Loan Documents" means this Agreement and each promissory note, if
any, delivered pursuant to this Agreement, as such documents may be amended,
modified, supplemented or restated from time to time.

          "Margin" means, with respect to any Competitive Loan bearing interest
at a rate based on the LIBO Rate, the marginal rate of interest, if any, to be
added to or subtracted from the LIBO Rate to determine the rate of interest
applicable to such Loan, as specified by the Lender making such Loan in its
related Competitive Bid.

          "Margin Stock" means "margin stock" as defined in Regulation U of the
Board.

          "Material Adverse Effect" means a material adverse effect on (a) the
business, operations, condition (financial or otherwise) or prospects of the
Company and the Subsidiaries taken as a whole, (b) the consummation of the
Acquisition, (c) the ability of the Borrowers to perform their material
obligations under any of the Loan Documents, (d) the validity or enforceability
of any of the Loan Documents, (e) the rights and remedies of the Lenders and the
Co-Administrative Agents under any of the Loan Documents or (f) the timely
payment of the principal of or interest on the Loans or other amounts payable in
connection therewith.

          "Material Subsidiary" means, at any time, (a) each Borrower and (b)
any other Subsidiary if, at such time, such Subsidiary would qualify as a
"significant subsidiary" under Regulation S-X of the SEC as in effect on the
date hereof.

          "Maturity Date" means March 30, 2006.
<PAGE>

                                                                              14

          "Merger Agreement" has the meaning assigned to such term in the
preamble to this Agreement.

          "Moody's" means Moody's Investors Service, Inc. and its successors and
assigns.

          "Multiemployer Plan" means a multiemployer plan defined as such in
Section 3(37) of ERISA to which contributions have been made by the Borrowers or
any ERISA Affiliate and which is covered by Title IV of ERISA

          "Northrop Merger" has the meaning assigned to such term in the
preamble to this Agreement.

          "Northrop Merger Sub" has the meaning assigned to such term in the
preamble to this Agreement.

          "Northrop Operating Senior Indenture" means the Indenture dated as of
October 15, 1994 between Northrop Operating and Chase, as trustee, as
supplemented by the Officers Certificate dated February 27, 1996 pursuant to
Sections 201, 301 and 303 of such Indenture, and as the same shall be further
modified and supplemented and in effect from time to time.

          "Northrop Operating Subordinated Indenture" means the form of
Indenture filed as Exhibit 4-6 to Northrop Operating's Registration Statement on
Form S-3 filed with the SEC on August 19, 1994, as amended by the Northrop
Operating's Form 8-K filed with the SEC on February 28, 1996.

          "Obligations" means (i) the obligations of the Borrowers under this
Agreement and the other Loan Documents with respect to the payment of the
principal of and interest on the Loans when and as due, whether at maturity, by
acceleration, upon one or more dates set for prepayment or otherwise and (ii)
all other monetary obligations of the Borrowers hereunder and thereunder.

          "Other Taxes" means any and all present or future recording, stamp,
documentary, excise, transfer, sales, property or similar taxes, charges or
levies arising from any payment made under any Loan Document or from the
execution, delivery or enforcement of, or otherwise with respect to, any Loan
Document.

          "Participant" has the meaning assigned to such term in Section 10.04.

          "Payment Agent" means Chase, in its capacity as paying agent for the
Lenders hereunder, or any successor thereto appointed in accordance with Article
VIII.

          "PBGC" means the Pension Benefit Guaranty Corporation or any entity
succeeding to any or all of its functions under ERISA.

          "Permitted Investments" means:
<PAGE>

                                                                              15

          (a)  direct obligations of, or obligations the principal of and
     interest on which are unconditionally guaranteed by, the United States of
     America (or by any agency thereof to the extent such obligations are backed
     by the full faith and credit of the United States of America), in each case
     maturing within one year from the date of acquisition thereof;

          (b)  investments in commercial paper maturing within 270 days from the
     date of acquisition thereof and having, at such date of acquisition, the
     highest credit rating obtainable from S&P or from Moody's;

          (c)  investments in certificates of deposit, banker's acceptances and
     time deposits maturing within 180 days from the date of acquisition thereof
     issued or guaranteed by or placed with, and money market deposit accounts
     issued or offered by, any office located in the United States of America of
     any commercial bank organized under the laws of the United States of
     America or any State thereof which has a combined capital and surplus and
     undivided profits of not less than $500,000,000;

          (d)  fully collateralized repurchase agreements with a term of not
     more than 30 days for securities described in clause (a) above and entered
     into with a financial institution satisfying the criteria described in
     clause (c) above; and

          (e)  investments purchased for cash management purposes by offices or
     other establishments of the Company and the Subsidiaries located outside
     the United States of America, to the extent the credit quality of such
     investments is comparable to that of the investments described in clauses
     (a) through (d) above.

          "Person" means any natural person, corporation, limited liability
company, trust, joint venture, association, company, partnership, Governmental
Authority or other entity.

          "Plan" means an employee benefit or other plan established or
maintained by the Company or any ERISA Affiliate and which is covered by Title
IV of ERISA, other than a Multiemployer Plan.

          "Prime Rate" means the rate of interest per annum publicly announced
from time to time by Chase as its prime rate in effect at its principal office
in New York City; each change in the Prime Rate shall be effective from and
including the date such change is publicly announced as being effective.

          "Property" means any interest in any kind of property or asset,
whether real, personal or mixed, or tangible or intangible, whether now owned or
hereafter acquired.

          "Quarterly Period" means the period from but excluding one Fiscal Date
through and including the next succeeding Fiscal Date.

          "Refinanced Debt" means the Indebtedness of the Borrowers and their
respective subsidiaries listed in Schedule 1.01(a).
<PAGE>

                                                                              16

          "Register" has the meaning set forth in Section 10.04.

          "Related Parties" means, with respect to any specified Person, such
Person's Affiliates and the respective directors, officers, employees, agents
and advisors of such Person and such Person's Affiliates.

          "Required Lenders" means, at any time, Lenders having Revolving Credit
Exposures and unused Commitments representing more than 50% of the total
Revolving Credit Exposures and unused Commitments at such time; provided that,
in connection with the exercise of remedies under Article VII and for all
purposes after the Loans become due and payable or the Commitments expire or
terminate,  "Required Lenders" will mean, at any time, Lenders having Revolving
Credit Exposures and outstanding Competitive Loans representing more than 50% of
the total Revolving Credit Exposures and outstanding Competitive Loans at such
time.

          "Restricted Payment" means any dividend (other than dividends payable
solely in stock of the Company) or any other distribution with respect to any
stock of the Company, whether now or hereafter outstanding, or any payment on
account of the purchase, acquisition, redemption or other retirement, directly
or indirectly, of any shares of such stock.

          "Revolving Borrowing" means a Borrowing consisting of Revolving Loans.

          "Revolving Borrowing Request" means a request by a Borrower for a
Revolving Borrowing in accordance with Section 2.03.

          "Revolving Commitment" means, with respect to each Lender, the
commitment, if any, of such Lender to make Revolving Loans, expressed as an
amount representing the maximum aggregate amount of such Lender's Revolving
Exposure hereunder, as such commitment may be reduced from time to time pursuant
to Article II and reduced or increased from time to time pursuant to Article X.
The initial amount of each Lender's Revolving Commitment is set forth on
Schedule 2.01. The initial aggregate amount of the Lenders' Revolving
Commitments is $2,500,000,000.

          "Revolving Credit Exposure" means, with respect to any Lender at any
time, the sum of the outstanding principal amount of such Lender's Revolving
Loans at such time.

          "Revolving Loan" means a loan made pursuant to Section 2.10 and 2.03.

          "SEC" means the Securities and Exchange Commission or any successor.

          "Senior Long Term Debt" means Indebtedness of the Company that (a) is
not contractually subordinated to any other Indebtedness of the Company, (b) is
considered as of the date of its incurrence under GAAP to be "long-term" debt,
(c) is not secured by a Lien on any Property of the Company or any of the
Subsidiaries or, if secured, is secured only by a pledge of the capital stock of
one or more Subsidiaries on a pari passu basis with the Indebtedness of the
Company hereunder and (d) upon which no other Person is liable, under a
Guarantee or otherwise,
<PAGE>

                                                                              17

or if another Person is so liable, such Person is liable on a pari passu basis
for the Indebtedness of the Company hereunder.

          "Senior Securities" means the $750,000,000 of Northrop Operating's 7
 1/8% Senior Notes due 2011 and $750,000,000 of Northrop Operating's 7 3/4%
 Senior Notes due 2031 issued under the Northrop Operating Senior Indenture and
 guaranteed concurrently with the Effective Date by the Company and Litton
 Operating.

          "S&P" means Standard & Poor's Rating Group, a division of McGraw Hill,
Inc., and its successors and assigns.

          "SPC" has the meaning assigned to such term in Section 10.04.

          "Statutory Reserve Rate" means a fraction (expressed as a decimal),
the numerator of which is the number one and the denominator of which is the
number one minus the aggregate of the maximum reserve percentages (including any
marginal, special, emergency or supplemental reserves) expressed as a decimal
established by the Board to which the Payment Agent is subject, for eurodollar
funding (currently referred to as "Eurodollar Liabilities" in Regulation D of
the Board). Such reserve percentages shall include those imposed pursuant to
such Regulation D. Eurodollar Revolving Loans shall be deemed to constitute
Eurodollar funding and to be subject to such reserve requirements without
benefit of or credit for proration, exemptions or offsets that may be available
from time to time to any Lender under such Regulation D or any comparable
regulation. The Statutory Reserve Rate shall be adjusted automatically on and as
of the effective date of any change in any reserve percentage.

          "Subordinated Indebtedness" means, with respect to any of the
Borrowers, (a) Indebtedness issued pursuant to the Northrop Operating
Subordinated Indenture (i) that does not have any principal or sinking fund
payment due prior to the Maturity Date and (ii) in respect of which interest is
payable not more often than semiannually and (b) Indebtedness (i) for which one
or more of the Company, Northrop Operating or Litton Operating is directly and
primarily liable, (ii) in respect of which none of the Subsidiaries (other than
Northrop Operating or Litton Operating) is contingently or otherwise obligated,
(iii) that does not have any principal or sinking fund payment due prior to the
Maturity Date, (iv) in respect of which interest is payable not more often than
semi-annually, (v) that is subordinated to the obligations of the Borrowers to
pay principal of and interest on the Loans and fees and other amounts payable
hereunder on terms no less favorable, taken as a whole, to the Lenders than
those contained in the Northrop Operating Subordinated Indenture, (vi) that does
not in any event contain financial covenants or events of default more
restrictive than those in the Northrop Operating Subordinated Indenture and
(vii) the documentation for which contains other terms that, taken as a whole,
are no less favorable to the Lenders than those contained in the Northrop
Operating Subordinated Indenture.

          "subsidiary" means, with respect to any Person (the "parent") at any
date, any corporation, limited liability company, partnership, association or
other entity the accounts of which would be consolidated with those of the
parent in the parent's consolidated financial statements if such financial
statements were prepared in accordance with GAAP as of such date, as well as any
other corporation, limited liability company, partnership, association or other
entity of
<PAGE>

                                                                              18

which securities or other ownership interests representing more than 50% of the
equity or more than 50% of the ordinary voting power or, in the case of a
partnership, more than 50% of the general partnership interests are, as of such
date, owned, controlled or held.

          "Subsidiary" means any direct or indirect subsidiary of the Company.

          "Substitute Rating Agency" means any rating agency (other than Moody's
or S&P) proposed by the Company and reasonably acceptable to the Co-
Administrative Agents.

          "364-Day Credit Agreement" means the 364-Day Credit Agreement dated as
of the date hereof among the Borrowers, the lenders party thereto and Chase and
CSFB, as the co-administrative agents.

          "Taxes" means any and all present or future taxes, levies, imposts,
duties, deductions, charges or withholdings imposed by any Governmental
Authority.

          "Termination Event" shall mean any event or condition which
constitutes grounds under Section 4042 of ERISA for the termination of, or for
the appointment of a trustee to administer, any Plan and which involves a
liability of the Company to the PBGC in excess of $50,000,000.

          "Transactions" means the execution, delivery and performance by the
Borrowers of this Agreement and the other Loan Documents, the borrowing of the
Loans and the use of the proceeds thereof, the Acquisition (including the making
and consummation of the Exchange Offer and the Mergers), the refinancing of the
Existing Credit Agreements and the Refinanced Debt and the other transactions in
connection therewith.

          "Type", when used in reference to any Revolving Loan or Revolving
Borrowing, refers to whether the rate of interest on such Revolving Loan, or on
the Revolving Loans comprising such Revolving Borrowing, is determined by
reference to the Adjusted LIBO Rate or the Alternate Base Rate.

          "Wholly-Owned Subsidiary" shall mean any Subsidiary of which all of
the equity securities or other ownership interests (other than, in the case of a
corporation, directors' qualifying shares) are owned by the Company or one or
more Wholly-Owned Subsidiaries.

          "Working Capital Credit Lines" means short-term credit facilities
(including commercial paper facilities and facilities providing for the issuance
of letters of credit or similar instruments but excluding the facilities
established by this Agreement and the 364-Day Credit Agreement) extended to the
Borrowers and Subsidiaries for working capital purposes.

          SECTION 1.02.  Classification of Loans and Borrowings.  For purposes
                         ---------------------------------------
of this Agreement, Loans may be classified and referred to by Class (e.g., a
                                                                     ----
"Revolving Loan") or by Type (e.g., a "Eurodollar Loan") or by Class and Type
                              ----
(e.g., a "Eurodollar Revolving Loan"). Borrowings also may be classified and
-----
referred to by Class (e.g., a "Revolving Borrowing") or by
<PAGE>

                                                                              19

Type (e.g., a "Eurodollar Borrowing") or by Class and Type (e.g., a "Eurodollar
      ---                                                   ---
Revolving Borrowing").

          SECTION 1.03.  Terms Generally.  The definitions of terms herein shall
apply equally to the singular and plural forms of the terms defined.  Whenever
the context may require, any pronoun shall include the corresponding masculine,
feminine and neuter forms.  The words "include", "includes" and "including"
shall be deemed to be followed by the phrase "without limitation".  The word
"will" shall be construed to have the same meaning and effect as the word
"shall".  Unless the context requires otherwise (a) any definition of or
reference to any agreement, instrument or other document herein shall be
construed as referring to such agreement, instrument or other document as from
time to time amended, supplemented or otherwise modified (subject to any
restrictions on such amendments, supplements or modifications set forth herein),
(b) any reference herein to any Person shall be construed to include such
Person's successors and assigns, (c) the words "herein", "hereof" and
"hereunder", and words of similar import, shall be construed to refer to this
Agreement in its entirety and not to any particular provision hereof, (d) all
references herein to Articles, Sections, Exhibits and Schedules shall be
construed to refer to Articles and Sections of, and Exhibits and Schedules to,
this Agreement and (e) the words "asset" and "property" shall be construed to
have the same meaning and effect and to refer to any and all tangible and
intangible assets and properties, including cash, securities, accounts and
contract rights.

          SECTION 1.04.  Accounting Terms; GAAP. Except as otherwise expressly
provided herein, all terms of an accounting or financial nature shall be
construed in accordance with GAAP, as in effect from time to time; provided
that, if the Company notifies the Co-Administrative Agents that the Company
requests an amendment to any provision hereof to eliminate the effect of any
change occurring after the date hereof in GAAP or in the application thereof on
the operation of such provision (or if the Co-Administrative Agents notify the
Company that the Required Lenders request an amendment to any provision hereof
for such purpose), regardless of whether any such notice is given before or
after such change in GAAP or in the application thereof, then such provision
shall be interpreted on the basis of GAAP as in effect and applied immediately
before such change shall have become effective until such notice shall have been
withdrawn or such provision amended in accordance herewith.

          SECTION 1.05.  Certain Financial Covenant Calculations. For purposes
of determining the Funded Debt to Consolidated EBITDA Ratio and the Consolidated
Fixed Charge Coverage Ratio for the four quarter periods ending June 30, 2001,
September 30, 2001 and December 31, 2001, the fiscal quarter ending March 31,
2001, shall be excluded and:

          (a)  Consolidated EBITDA and Capital Expenditures shall be determined
on a pro forma basis combining, as applicable to reflect the then four most
recently completed fiscal quarters (excluding the fiscal quarter ending March
31, 2001), (i) the balance sheet information and results of Litton Operating at
and for the quarter ended July 31, 2000 set forth in Litton's public filings
with the SEC as of the Effective Date, and the actual balance sheet information
and results of Northrop Operating at and for the quarter ended June 30, 2000;
(ii) the balance sheet information and results of Litton Operating at and for
the quarter ended October 31, 2000 set forth in Litton's public filings with the
SEC as of the Effective Date, and the actual balance sheet

<PAGE>

                                                                              20

information and results of Northrop Operating at and for the quarter ended
September 30, 2000; and (iii) the balance sheet information and results of
Litton Operating at and for the quarter ended January 31, 2001 set forth in
Litton's public filings with the SEC as of the Effective Date, and the actual
balance sheet information and results of Northrop Operating at and for the
quarter ended December 31, 2000; and

          (b)  Interest Expense shall be determined on a pro forma basis by
annualizing, as applicable to reflect the fiscal quarters then most recently
completed since the Effective Date, (i) as of June 30, 2001, by multiplying the
actual consolidated Interest Expense of the Company for the fiscal quarter then
ended by four, (ii), as of September 30, 2001, by multiplying the actual
consolidated Interest Expense of the Company for the two fiscal quarter period
then ended by two, and (iii) as of December 31, 2001, by multiplying the actual
consolidated Interest Expense of the Company for the three fiscal quarter period
then ended by four thirds.

                                  ARTICLE II

                                  The Credits

          SECTION 2.01.  Commitments. Subject to the terms and conditions set
forth herein, each Lender agrees to make Revolving Loans to the Borrowers from
time to time during the Availability Period in an aggregate principal amount
that will not result in (a) such Lender's Revolving Credit Exposure exceeding
such Lender's Commitment or (b) the sum of the total Revolving Credit Exposures
plus the total Competitive Loan Exposures exceeding the total Commitments.
Within the foregoing limits and subject to the terms and conditions set forth
herein, the Borrowers may borrow, prepay and reborrow Revolving Loans.

          SECTION 2.02.  Revolving Loans and Revolving Borrowings. (a) Each
Revolving Loan shall be made as part of a Revolving Borrowing consisting of
Revolving Loans made by the Lenders ratably in accordance with their respective
Commitments. The failure of any Lender to make any Revolving Loan required to be
made by it shall not relieve any other Lender of its obligations hereunder;
provided that the Commitments and Competitive Bids of the Lenders are several
and no Lender shall be responsible for any other Lender's failure to make Loans
as required.

          (b)  Subject to Section 2.13, (i) each Revolving Borrowing shall be
comprised entirely of ABR Loans or Eurodollar Loans as the applicable Borrower
may request in accordance herewith and (ii) each Competitive Borrowing shall be
comprised entirely of Eurodollar Loans or Fixed Rate Loans as the Borrower may
request in accordance herewith. Each Competitive Loan shall be made in
accordance with the procedures set forth in Section 2.04. Each Lender at its
option may make any Eurodollar Loan by causing any domestic or foreign branch or
Affiliate of such Lender to make such Loan; provided that any exercise of such
option shall not affect the obligation of the Borrowers to repay such Loan in
accordance with the terms of this Agreement.

          (c)  At the commencement of each Interest Period for any Eurodollar
Revolving Borrowing, such Revolving Borrowing shall be in an aggregate amount
that is an integral multiple of $5,000,000 and not less than $25,000,000. At the
time that each ABR Borrowing is made, such
<PAGE>

                                                                              21

Borrowing shall be in an aggregate amount that is an integral multiple of
$5,000,000 and not less than $10,000,000. Notwithstanding the foregoing, any
Revolving Borrowing may be in an aggregate amount that is equal to the entire
unused balance of the Commitments. Each Competitive Borrowing shall be in an
aggregate amount that is an integral multiple of $5,000,000 and not less than
$25,000,000. Revolving Borrowings of more than one Type may be outstanding at
the same time, provided that there shall not at any time be more than a total of
15 Eurodollar Revolving Borrowings outstanding.

          (d)  Notwithstanding any other provision of this Agreement, no
Borrower shall be entitled to request, or to elect to convert or continue, any
Revolving Borrowing if the Interest Period requested with respect thereto would
end after the Maturity Date, or to request any Competitive Borrowing if the
Interest Period requested with respect thereto would end after the Maturity
Date.

          SECTION 2.03.  Requests for Revolving Borrowings. To request a
Revolving Borrowing, the Borrowers (or any of them) shall notify the Payment
Agent of such request by telephone or by telecopy (a) in the case of a
Eurodollar Revolving Borrowing, not later than 11:00 a.m., New York City time,
three Business Days before the date of the proposed Revolving Borrowing or (b)
in the case of an ABR Borrowing, not later than 11:00 a.m., New York City time,
on the same day as the date of the proposed Revolving Borrowing. Each such
Revolving Borrowing Request shall be irrevocable and, if telephonic, shall be
confirmed promptly by hand delivery or telecopy to the Payment Agent of a
written Revolving Borrowing Request in a form agreed to by the Payment Agent and
signed by the applicable Borrower. Each such telephonic and written Revolving
Borrowing Request shall specify the following information in compliance with
Section 2.02:

          (i)   the aggregate amount of the requested Revolving Borrowing;

          (ii)  the date of such Revolving Borrowing, which shall be a Business
     Day;

          (iii) whether such Revolving Borrowing is to be an ABR Borrowing or a
     Eurodollar Revolving Borrowing; and

          (iv)  in the case of a Eurodollar Revolving Borrowing, the initial
     Interest Period to be applicable thereto, which shall be a period
     contemplated by the definition of the term "Interest Period".

If no election as to the Type of Revolving Borrowing is specified, then the
requested Revolving Borrowing shall be an ABR Borrowing.  If no Interest Period
is specified with respect to any requested Eurodollar Revolving Borrowing, then
the applicable Borrower shall be deemed to have selected an Interest Period of
one month's duration.  Promptly following receipt of a Revolving Borrowing
Request in accordance with this Section, the Payment Agent shall advise each
Lender of the details thereof and of the amount of such Lender's Revolving Loan
to be made as part of the requested Revolving Borrowing.
<PAGE>

                                                                              22

          SECTION 2.04.  Competitive Bid Procedure. (a) Subject to the terms and
conditions set forth herein, from time to time during the Availability Period
any Borrower may request Competitive Bids and may (but shall not have any
obligation to) accept Competitive Bids and borrow Competitive Loans; provided
that after giving effect to any Borrowing of Competitive Loans the sum of the
total Revolving Credit Exposures plus the total Competitive Loan Exposure shall
not exceed the total Commitments. To request Competitive Bids, the Borrower
shall notify the Payment Agent of such request by telephone or by telecopy, in
the case of a Eurodollar Borrowing, not later than 11:00 a.m., New York City
time, four Business Days before the date of the proposed Borrowing and, in the
case of a Fixed Rate Borrowing, not later than 11:00 a.m., New York City Time,
one Business Day before the date of the proposed Borrowing; provided that the
Borrower may submit up to (but not more than) five Competitive Bid Requests on
the same day, but a Competitive Bid Request shall not be made within five
Business Days after the date of any previous Competitive Bid Request, unless any
and all such previous Competitive Bid Requests shall have been withdrawn or all
Competitive Bids received in response thereto rejected. Each such telephonic
Competitive Bid Request shall be confirmed promptly by hand delivery or telecopy
to the Payment Agent of a written Competitive Bid Request in a form approved by
the Payment Agent and signed by the Borrower. Each such telephonic and written
Competitive Bid Request shall specify the following information in compliance
with Section 2.03:

          (i)   the aggregate principal amount of the requested Borrowing;

          (ii)  the date of such Borrowing, which shall be a Business Day;

          (iii) whether such Borrowing is to be a Eurodollar Borrowing or a
     Fixed Rate Borrowing; and

          (iv)  the Interest Period to be applicable to such Borrowing, which
     shall be a period contemplated by the definition of the term "Interest
     Period" and shall end no later than the Maturity Date.

Promptly following receipt of a Competitive Bid Request in accordance with this
Section, the Payment Agent shall notify the Lenders of the details thereof by
telecopy, inviting the Lenders to submit Competitive Bids.

          (b)   Each Lender may (but shall not have any obligation to) make one
or more Competitive Bids to the Borrower in response to a Competitive Bid
Request. Each Competitive Bid by a Lender must be in a form approved by the
Payment Agent and must be received by the Applicable Agent by telecopy, in the
case of a Eurodollar Competitive Borrowing, not later than 9:30 a.m., New York
City Time, three Business Days before the proposed date of such Competitive
Borrowing, and in the case of a Fixed Rate Borrowing, not later than 9:30 a.m.,
New York City Time, on the proposed date of such Competitive Borrowing.
Competitive Bids that do not conform substantially to the form approved by the
Payment Agent may be rejected by the Payment Agent, and the Payment Agent shall
notify the applicable Lender as promptly as practicable. Each Competitive Bid
shall specify (i) the principal amount (which shall be an amount at least equal
to $5,000,000 and an integral multiple of $1,000,000 and which may equal the
entire principal amount of the Competitive Borrowing requested by the Borrower)
of the Competitive Loan or
<PAGE>

                                                                              23

Loans that the Lender is willing to make, (ii) the Competitive Bid Rate or Rates
at which the Lender is prepared to make such Loan or Loans (expressed as a
percentage rate per annum in the form of a decimal to no more than four decimal
places) and (iii) the Interest Period applicable to each such Loan and the last
day thereof.

          (c)  The Payment Agent shall notify the Borrower by telecopy, not
later than 45 minutes after the applicable deadline for receipt of Competitive
Bids, of the Competitive Bid Rate and the principal amount specified in each
Competitive Bid and the identity of the Lender that shall have made such
Competitive Bid.

          (d)  Subject only to the provisions of this paragraph, the Borrower
may accept or reject any Competitive Bid.  The Borrower shall notify the Payment
Agent by telecopy or by telephone, confirmed by telecopy in a form approved by
the Payment Agent, whether and to what extent it has decided to accept or reject
each Competitive Bid, in the case of a Eurodollar Competitive Borrowing, not
later than 11:00 a.m., New York City time, three Business Days before the date
of the proposed Competitive Borrowing, and in the case of a Fixed Rate
Borrowing, not later than 11:00 a.m., New York City time, on the proposed date
of the Competitive Borrowing; provided that (i) the failure of the Borrower to
give such notice shall be deemed to be a rejection of each Competitive Bid, (ii)
the Borrower shall not accept a Competitive Bid made at a particular Competitive
Bid Rate if the Borrower rejects a Competitive Bid made at a lower Competitive
Bid Rate, (iii) the aggregate amount of the Competitive Bids accepted by the
Borrower shall not exceed the aggregate amount of the requested Competitive
Borrowing specified in the related Competitive Bid Request, (iv) to the extent
necessary to comply with clause (iii) above, the Borrower may accept Competitive
Bids at the same Competitive Bid Rate in part, which acceptance, in the case of
multiple Competitive Bids at such Competitive Bid Rate, shall be made pro rata
in accordance with the amount of each such Competitive Bid, and (v) except
pursuant to clause (iv) above, no Competitive Bid shall be accepted for a
Competitive Loan unless such Competitive Loan is in a minimum principal amount
of at least $5,000,000 that is an integral multiple of $1,000,000; provided
further that if a Competitive Loan must be in an amount less than $5,000,000
because of the provisions of clause (iv) above, such Competitive Loan may be for
a minimum of $1,000,000 or any integral multiple thereof, and in calculating the
pro rata allocation of acceptances of portions of multiple Competitive Bids at a
particular Competitive Bid Rate pursuant to clause (iv) the amounts shall be
rounded to integral multiples of $1,000,000 in a manner determined by the
Borrower. A notice given by the Borrower pursuant to this paragraph shall be
irrevocable.

          (e)  The Payment Agent shall promptly notify each bidding Lender by
telecopy whether or not its Competitive Bid has been accepted (and, if so, the
amount and Competitive Bid Rate so accepted), and each successful bidder will
thereupon become bound, subject to the terms and conditions hereof, to make the
Competitive Loan in respect of which its Competitive Bid has been accepted.

          (f)  If the Payment Agent shall elect to submit a Competitive Bid in
its capacity as a Lender, it shall submit such Competitive Bid directly to the
Borrower at least one quarter of an hour earlier than the time by which the
other Lenders are required to submit their Competitive Bids to the Payment Agent
pursuant to paragraph (b) of this Section.
<PAGE>

                                                                              24

          SECTION 2.05.  Funding of Revolving Borrowings. (a) Each Lender shall
make each Loan to be made by it hereunder on the proposed date thereof by wire
transfer of immediately available funds by 1:00 p.m., New York City time, to the
account of the Payment Agent most recently designated by it for such purpose by
notice to the Lenders. The Payment Agent will make such Loans available to the
Borrowers by promptly crediting the amounts so received, in like funds, to
Disbursement Account.

          (b)  Unless the Payment Agent shall have received notice from a Lender
prior to the proposed date of any Borrowing that such Lender will not make
available to the Payment Agent such Lender's share of such Borrowing, the
Payment Agent may assume that such Lender has made such share available on such
date in accordance with paragraph (a) of this Section and may, in reliance upon
such assumption, make available to the Borrowers a corresponding amount. In such
event, if a Lender has not in fact made its share of the applicable Borrowing
available to the Payment Agent, then the applicable Lender and the Borrowers
severally agree to pay to the Payment Agent forthwith on demand such
corresponding amount with interest thereon, for each day from and including the
date such amount is made available to the Borrowers to but excluding the date of
payment to the Payment Agent, at (i) in the case of such Lender, the greater of
(x) the Federal Funds Effective Rate and (y) a rate determined by the Payment
Agent in accordance with banking industry rules on interbank compensation or
(ii) in the case of the Borrowers, the interest rate for the applicable
Borrowing. If such Lender pays such amount to the Payment Agent, then such
amount shall constitute such Lender's Loan included in such Borrowing.

          SECTION 2.06.  Interest Elections. (a) Each Revolving Borrowing
initially shall be of the Type specified in the applicable Revolving Borrowing
Request and, in the case of a Eurodollar Revolving Borrowing, shall have an
initial Interest Period as specified in such Revolving Borrowing Request.
Thereafter, the applicable Borrower may elect to convert such Borrowing to a
different Type or to continue such Revolving Borrowing and, in the case of a
Eurodollar Revolving Borrowing, may elect Interest Periods therefor, all as
provided in this Section. The applicable Borrower may elect different options
with respect to different portions of the affected Revolving Borrowing, in which
case each such portion shall be allocated ratably among the Lenders holding the
Revolving Loans comprising such Revolving Borrowing, and the Revolving Loans
comprising each such portion shall be considered a separate Revolving Borrowing.
This Section shall not apply to Competitive Borrowings, which may not be
converted or continued.

          (b)  To make an election pursuant to this Section, a Borrower shall
notify the Payment Agent of such election by telephone or by telecopy by the
time that a Revolving Borrowing Request would be required under Section 2.03 if
such Borrower were requesting a Revolving Borrowing of the Type resulting from
such election to be made on the effective date of such election. Each such
Interest Election Request shall be irrevocable and, if telephonic, shall be
confirmed promptly by hand delivery or telecopy to the Payment Agent of a
written Interest Election Request in a form approved by the Payment Agent and
signed by such Borrower.
<PAGE>

                                                                              25

          (c)   Each telephonic and written Interest Election Request shall
specify the following information in compliance with Section 2.02:

          (i)   the Revolving Borrowing to which such Interest Election Request
     applies and, if different options are being elected with respect to
     different portions thereof, the portions thereof to be allocated to each
     resulting Revolving Borrowing (in which case the information to be
     specified pursuant to clauses (iii) and (iv) below shall be specified for
     each resulting Revolving Borrowing);

          (ii)  the effective date of the election made pursuant to such
     Interest Election Request, which shall be a Business Day;

          (iii) whether the resulting Borrowing is to be an ABR Borrowing or a
     Eurodollar Revolving Borrowing; and

          (iv)  if the resulting Revolving Borrowing is a Eurodollar Revolving
     Borrowing, the Interest Period to be applicable thereto after giving effect
     to such election, which shall be a period contemplated by the definition of
     the term "Interest Period".

If any such Interest Election Request requests a Eurodollar Revolving Borrowing
but does not specify an Interest Period, then the applicable Borrower shall be
deemed to have selected an Interest Period of one month's duration.

          (d)   Promptly following receipt of an Interest Election Request, the
Payment Agent shall advise each Lender of the details thereof and of such
Lender's portion of each resulting Revolving Borrowing.

          (e)   If a Borrower fails to deliver a timely Interest Election
Request with respect to a Eurodollar Revolving Borrowing prior to the end of the
Interest Period applicable thereto, then, unless such Revolving Borrowing is
repaid as provided herein, at the end of such Interest Period such Revolving
Borrowing shall be converted to an ABR Borrowing. Notwithstanding any contrary
provision hereof, if an Event of Default has occurred and is continuing and the
Payment Agent, at the request of the Required Lenders, so notifies the
Borrowers, then, so long as an Event of Default is continuing (i) no outstanding
Revolving Borrowing may be converted to or continued as a Eurodollar Revolving
Borrowing and (ii) unless repaid, each Eurodollar Revolving Borrowing shall be
converted to an ABR Borrowing at the end of the Interest Period applicable
thereto.

          SECTION 2.07.  Termination and Reduction of Commitments.  (a)  Unless
previously terminated, the Commitments shall terminate on the Maturity Date.

          (b)   The Borrowers may at any time terminate, or from time to time
reduce, the Commitments; provided that (i) each reduction of the Commitments
shall be in an amount that is an integral multiple of $5,000,000 and not less
than $25,000,000 and (ii) the Borrowers shall not terminate or reduce the
Commitments if, after giving effect to any concurrent prepayment of the
Revolving Loans in accordance with Section 2.09, the total Revolving Credit
Exposures and Competitive Loan Exposures would exceed the total Commitments.
<PAGE>

                                                                              26

          (c)   The Borrowers shall notify the Payment Agent of any election to
terminate, or of any optional or mandatory reduction of, the Commitments under
paragraph (b) of this Section at least three Business Days prior to the
effective date of such termination or reduction, specifying such election or
requirement and the effective date thereof. Promptly following receipt of any
notice, the Payment Agent shall advise the Lenders of the contents thereof. Each
notice delivered by a Borrower pursuant to this Section shall be irrevocable;
provided that a notice of termination of the Commitments delivered by a Borrower
under paragraph (b) of this Section may state that such notice is conditioned
upon the effectiveness of other credit facilities, in which case such notice may
be revoked by a Borrower (by notice to the Payment Agent on or prior to the
specified effective date) if such condition is not satisfied. Any termination or
reduction of the Commitments shall be permanent. Each reduction of the
Commitments shall be made ratably among the Lenders in accordance with their
respective Commitments.

          SECTION 2.08.  Repayment of Loans; Evidence of Debt.  (a)  The
Borrowers hereby unconditionally jointly and severally promise to pay (i) to the
Payment Agent for the account of each Lender the unpaid principal amount of each
Loan on the Maturity Date  and (ii) to the Payment Agent for the account of each
Lender the unpaid principal amount of each Competitive Loan on the last day of
the Interest Period applicable to such Loan.

          (b)   Each Lender shall maintain in accordance with its usual practice
an account or accounts evidencing the Indebtedness of the Borrowers to such
Lender resulting from each Loan made by such Lender, including the amounts of
principal and interest payable and paid to such Lender from time to time
hereunder.

          (c)   The Payment Agent shall maintain accounts in which it shall
record (i) the amount of each Loan made hereunder, the Type thereof and the
Interest Period, if any, applicable thereto, (ii) the amount of any principal or
interest due and payable or to become due and payable from the Borrowers to each
Lender hereunder and (iii) the amount of any sum received by the Payment Agent
hereunder for the account of the Lenders and each Lender's share thereof.

          (d)   The entries made in the accounts maintained pursuant to
paragraph (b) or (c) of this Section shall be prima facie evidence of the
existence and amounts of the obligations recorded therein; provided that the
failure of any Lender or the Payment Agent to maintain such accounts or any
error therein shall not in any manner affect the obligation of a Borrower to
repay the Loans in accordance with the terms of this Agreement.

          (e)   Any Lender may request that Loans made by it be evidenced by a
promissory note. In such event, each Borrower shall execute and deliver to such
Lender a promissory note payable to the order of such Lender (or, if requested
by such Lender, to such Lender and its registered assigns) in substantially the
form attached hereto as Exhibit C. Thereafter, the Loans evidenced by such
promissory note and interest thereon shall at all times (including after
assignment pursuant to Section 10.04) be represented by one or more promissory
notes in such form payable to the order of the payee named therein (or, if such
promissory note is a registered note, to such payee and its registered assigns).
<PAGE>

                                                                              27

          SECTION 2.09.  Prepayment of Revolving Loans. (a) The Borrowers shall
have the right at any time and from time to time to prepay any Revolving
Borrowing in whole or in part, subject to prior notice in accordance with
paragraph (c) of this Section and payment of any amounts required under Section
2.14; provided that the Borrower shall not have the right to prepay any
Competitive Loan without the prior consent of the Lender thereof.

          (b)  In the event and on each occasion that the total Revolving Credit
Exposures and Competitive Loan Exposures exceed the total Commitments, the
Borrowers shall promptly prepay Revolving Borrowings in an aggregate amount
sufficient to eliminate such excess.

          (c)  The Borrowers shall notify the Payment Agent by telephone
(confirmed by telecopy) or by telecopy of any prepayment hereunder (i) in the
case of prepayment of a Eurodollar Revolving Borrowing, not later than 11:00
a.m., New York City time, three Business Days before the date of such
prepayment, or (ii) in the case of prepayment of an ABR Borrowing, not later
than 11:00 a.m., New York City time, on the Business Day of such prepayment.
Each such notice shall be irrevocable and shall specify the prepayment date and
the principal amount of each Revolving Borrowing or portion thereof to be
prepaid; provided that, if a notice of prepayment is given in connection with a
conditional notice of termination of the Commitments as contemplated by Section
2.07, then such notice of prepayment may be revoked if such notice of
termination is revoked in accordance with Section 2.07. Promptly following
receipt of any such notice, the Payment Agent shall advise the Lenders of the
contents thereof. Each partial prepayment, other than a mandatory prepayment, of
any Revolving Borrowing shall be in an amount that would be permitted in the
case of an advance of a Revolving Borrowing of the same Type as provided in
Section 2.02. Each prepayment of a Revolving Borrowing shall be applied ratably
to the Loans included in the prepaid Revolving Borrowing. Prepayments shall be
accompanied by accrued interest to the extent required by Section 2.11.

          SECTION 2.10.  Fees. (a)  The Borrowers agree, jointly and severally,
to pay to the Payment Agent for the account of each Lender a facility fee, which
shall accrue at the relevant Facility Fee Rate specified in the definition of
Applicable Rate on the daily amount of the Commitment of such Lender (whether
used or unused) during the period from the date of this Agreement to but
excluding the Maturity Date; provided that, if such Lender continues to have any
Revolving Credit Exposure or Competitive Loan Exposure after the Maturity Date
or other termination of all the Commitments, then such facility fee shall
continue to accrue on the daily aggregate amount of such Lender's Revolving
Credit Exposure and Competitive Loan Exposure from and including the Maturity
Date or other termination of all the Commitments to but excluding the date on
which such Lender ceases to have any Revolving Credit Exposure or Competitive
Loan Exposure. Accrued facility fees shall be payable in arrears on June 30,
2001 and on the last day of each subsequent September, December, March and June
of each year, on any date prior to the Maturity Date on which the Commitments
terminate and on the Maturity Date, commencing on the first such date to occur
after the date hereof; provided that any facility fees accruing after the
Maturity Date or other termination of all the Commitments shall be payable on
demand. All facility fees shall be computed on the basis of a year of 360 days
and shall be payable for the actual number of days elapsed (including the first
day but excluding the last day).
<PAGE>

                                                                              28

          (b)  The Borrowers agree, jointly and severally, to pay to the Payment
Agent, for the accounts of the Lenders, on the date hereof, the upfront fees
separately agreed upon in the Fee Letter dated January 29, 2001, between the
Borrowers and the Co-Administrative Agents.

          (c)  The Borrowers agree, jointly and severally, to pay to each of the
Co-Administrative Agents, for their own accounts, fees payable in the amounts
and at the times separately agreed upon between the Borrowers and the Co-
Administrative Agents.

          (d)  All fees payable hereunder shall be paid on the dates due, in
immediately available funds, to the Payment Agent for distribution to the
Persons entitled thereto.  Fees paid shall not be refundable under any
circumstances.

          SECTION 2.11.  Interest.  (a)  The Loans comprising each ABR Borrowing
shall bear interest at the Alternate Base Rate plus the Applicable Rate.

          (b)  The Loans comprising each Eurodollar Borrowing shall bear
interest (i) in the case of a Eurodollar Revolving Loan, at the Adjusted LIBO
Rate for the Interest Period in effect for such Revolving Borrowing plus the
Applicable Rate or (ii) in the case of a Eurodollar Competitive Loan, at the
LIBO Rate for the Interest Period in effect for such Borrowing plus (or minus,
as applicable) the Margin applicable to such Loan.

          (c)  Each Fixed Rate Loan shall bear interest at the Fixed Rate
applicable to such Loan.

          (d)  Notwithstanding the foregoing, if any principal of or interest on
any Loan or any fee or other amount payable by the Borrowers hereunder is not
paid when due, whether at stated maturity, upon acceleration or otherwise, such
overdue amount shall bear interest, after as well as before judgment, at a rate
per annum equal to (i) in the case of overdue principal of any Loan, 2% plus the
rate otherwise applicable to such Loan as provided in the preceding paragraphs
of this Section or (ii) in the case of any other amount, 2% plus the rate
applicable to ABR Loans as provided in paragraph (a) of this Section.

          (e)  Accrued interest on each Loan shall be payable in arrears on each
Interest Payment Date for such Loan and upon termination of the Commitments;
provided that (i) interest accrued pursuant to paragraph (c) of this Section
shall be payable on demand, (ii) in the event of any repayment or prepayment of
any Loan (other than a prepayment of an ABR Loan prior to the end of the
Availability Period), accrued interest on the principal amount repaid or prepaid
shall be payable on the date of such repayment or prepayment and (iii) in the
event of any conversion of any Eurodollar Revolving Loan prior to the end of the
current Interest Period therefor, accrued interest on such Revolving Loan shall
be payable on the effective date of such conversion.

          (f)  All interest hereunder shall be computed on the basis of a year
of 360 days, except that interest computed by reference to the Alternate Base
Rate at times when the Alternate Base Rate is based on the Prime Rate shall be
computed on the basis of a year of 365 days (or 366 days in a leap year), and in
each case shall be payable for the actual number of days elapsed (including the
first day but excluding the last day).  The applicable Alternate Base Rate or
<PAGE>

                                                                              29

Adjusted LIBO Rate shall be determined by the Payment Agent, and such
determination shall be conclusive absent manifest error.

          SECTION 2.12.  Alternate Rate of Interest. If prior to the
commencement of any Interest Period for a Eurodollar Borrowing:

          (a)  the Payment Agent determines (which determination shall be
     conclusive absent manifest error) that adequate and reasonable means do not
     exist for ascertaining the Adjusted LIBO Rate or the LIBO Rate, as
     applicable, for such Interest Period; or

          (b)  the Payment Agent is advised by the Required Lenders (or, in the
     case of a Eurodollar Competitive Loan, the Lender required to make such
     Loan) that the Adjusted LIBO Rate or the LIBO Rate, as applicable, for such
     Interest Period will not adequately and fairly reflect the cost to such
     Lenders or such Lender of making or maintaining the Eurodollar Loans
     included in such Borrowing or its Eurodollar Loan for such Interest Period;

then the Payment Agent shall give notice thereof to the Borrowers and the
Lenders by telephone or telecopy as promptly as practicable thereafter and,
until the Payment Agent notifies the Borrowers and the Lenders that the
circumstances giving rise to such notice no longer exist, (i) any Interest
Election Request that requests the conversion of any Revolving Borrowing to, or
continuation of any Revolving Borrowing as, a Eurodollar Revolving Borrowing
shall be ineffective, and such Revolving Borrowing shall be converted to or
continued as an ABR Borrowing on the last day of the Interest Period applicable
thereto, (ii) if any Revolving Borrowing Request requests a Eurodollar Revolving
Borrowing, such Revolving Borrowing shall be made as an ABR Borrowing (or such
Revolving Borrowing shall not be made if the Borrowers revoke (and in such
circumstances, such Revolving Borrowing Request may be revoked notwithstanding
any other provision of this Agreement) such Revolving Borrowing Request by
telephonic notice, confirmed promptly in writing, not later than one Business
Day prior to the proposed date of such Revolving Borrowing) and (iii) any
request by the Borrowers for a Eurodollar Competitive Borrowing shall be
ineffective; provided that (A) if the circumstances giving rise to such notice
do not affect all the Lenders, then requests by the Borrowers for Eurodollar
Competitive Borrowings may be made to Lenders that are not affected thereby and
(B) if the circumstances giving rise to such notice affect only one Type of
Borrowings, then the other Type of Borrowings shall be permitted.

          SECTION 2.13.  Increased Costs.  (a)  If any Change in Law shall:

          (i)  impose, modify or deem applicable any reserve, special deposit or
     similar requirement against assets of, deposits with or for the account of,
     or credit extended by, any Lender (except to the extent any such reserve
     requirement is reflected in the Adjusted LIBO Rate); or

          (ii) impose on any Lender or the London interbank market any other
     condition affecting this Agreement or Eurodollar or Fixed Rate Loans made
     by such Lender;
<PAGE>

                                                                              30

and the result of any of the foregoing shall be to increase the cost to such
Lender of making or maintaining any Eurodollar or Fixed Rate Loan (or of
maintaining its obligation to make any such Loan) or to increase the cost to
such Lender to reduce the amount of any sum received or receivable by such
Lender hereunder (whether of principal, interest or otherwise), in each case by
an amount deemed by such Lender in good faith to be material, then the Borrowers
will pay to such Lender, within ten Business Days following a demand therefor
accompanied by the certificate referred to in paragraph (c) below, such
additional amount or amounts as will compensate such Lender on an after-tax
basis for such additional costs incurred or reduction suffered.

          (b)  If any Lender determines that any Change in Law regarding capital
requirements has or would have the effect of reducing the rate of return on such
Lender's capital or on the capital of such Lender's holding company, if any, as
a consequence of this Agreement or the Loans made by such Lender to a level
below that which such Lender, or such Lender's holding company could have
achieved but for such Change in Law (taking into consideration such Lender's
policies and the policies of such Lender's holding company with respect to
capital adequacy), then from time to time the Borrowers will pay to such Lender
within ten Business Days following a demand therefor accompanied by the
certificate referred to in paragraph (c) below, such additional amount or
amounts as will compensate such Lender or such Lender's holding company for any
such reduction suffered.

          (c)  A certificate of a Lender setting forth the amount or amounts
necessary to compensate such Lender or its holding company, as the case may be,
as specified in paragraph (a) or (b) of this Section, together with supporting
documentation or computations, shall be delivered to the Borrowers and shall be
conclusive absent manifest error.  The Borrowers shall pay such Lender the
amount shown as due on any such certificate within 10 Business Days after
receipt thereof.

          (d)  Failure or delay on the part of any Lender to demand compensation
pursuant to this Section shall not constitute a waiver of such Lender's right to
demand such compensation; provided that the Borrowers shall not be required to
compensate a Lender pursuant to this Section for any increased costs or
reductions incurred more than 90 days prior to the date that such Lender
notifies the Borrowers of the Change in Law giving rise to such increased costs
or reductions and of such Lender's intention to claim compensation therefor;
provided further that, if the Change in Law giving rise to such increased costs
or reductions is retroactive, then the 90-day period referred to above shall be
extended to include the period of retroactive effect thereof.

          SECTION 2.14.  Break Funding Payments.  In the event of (a) the
payment of any principal of any Eurodollar or Fixed Rate Loan other than on the
last day of an Interest Period applicable thereto (including as a result of an
Event of Default), (b) the conversion of any Eurodollar Revolving Loan other
than on the last day of the Interest Period applicable thereto, (c) the failure
to borrow, convert, continue or prepay any Eurodollar or Fixed Rate Loan on the
date specified in any notice delivered pursuant hereto (regardless of whether
such notice may be revoked under Section 2.07(d)  or 2.09 and is revoked in
accordance therewith), (d) the failure to borrow any Competitive Loan after
acceptance of the Competitive Bid to make such Loan or (e) the assignment of any
Eurodollar or Fixed Rate Loan other than on the last day of the Interest Period
applicable thereto as a result of a request by the Borrowers pursuant to Section
2.17, then,
<PAGE>

                                                                              31

in any such event, the Borrowers shall compensate each Lender for the loss, cost
and expense attributable to such event (which loss, cost or expense will not be
deemed to include lost profit). In the case of a Eurodollar or Fixed Rate Loan,
such loss, cost or expense to any Lender shall be deemed to include an amount
determined by such Lender to be the excess, if any, of (i) the amount of
interest which would have accrued on the principal amount of such Loan had such
event not occurred, at the Adjusted LIBO Rate or LIBO Rate (without adding
thereto the Applicable Rate or the Margin, as the case may be) that would have
been applicable to such Loan, for the period from the date of such event to the
last day of the then current Interest Period therefor (or, in the case of a
failure to borrow, convert or continue, for the period that would have been the
Interest Period for such Loan), over (ii) the amount of interest which would
accrue on such principal amount for such period at the interest rate which such
Lender would bid were it to bid, at the commencement of such period, for
deposits of a comparable amount and period from other banks in the eurodollar
market or, in the case of Fixed Rate Loans, other market. A certificate of any
Lender setting forth any amount or amounts that such Lender is entitled to
receive pursuant to this Section, together with supporting documentation or
computations, shall be delivered to the Borrowers and shall be conclusive absent
manifest error. The Borrowers shall pay such Lender the amount shown as due on
any such certificate within 10 Business Days after receipt thereof.

          SECTION 2.15. Taxes. (a) Any and all payments by or on account of any
obligations of the Borrowers hereunder or under any other Loan Document shall be
made free and clear of and without deduction for any Indemnified Taxes or Other
Taxes; provided that if a Borrower shall be required to deduct any Indemnified
Taxes or Other Taxes from such payments, then (i) the sum payable shall be
increased as necessary so that after making all required deductions of
Indemnified Taxes or Other Taxes (including deductions applicable to additional
sums payable under this Section) the Agent or Lender (as the case may be)
receives an amount equal to the sum it would have received had no such
deductions been made, (ii) such Borrower shall make such deductions and (iii)
such Borrower shall pay the full amount deducted to the relevant Governmental
Authority in accordance with applicable law.

          (b)  In addition, the Borrowers shall pay any Other Taxes to the
relevant Governmental Authority in accordance with applicable law.

          (c)  The Borrowers shall indemnify each Agent, each Lender, within 10
Business Days after written demand therefor, for the full amount of any
Indemnified Taxes or Other Taxes paid by such Agent or such Lender on or with
respect to any payment by or on account of any obligation of the Borrowers
hereunder or under any other Loan Document (including Indemnified Taxes or Other
Taxes imposed or asserted on or attributable to amounts payable under this
Section) and any penalties, interest and reasonable expenses arising therefrom
or with respect thereto, whether or not such Indemnified Taxes or Other Taxes
were correctly or legally imposed or asserted by the relevant Governmental
Authority. A certificate setting forth in reasonable detail the amount and
nature of such payment or liability delivered to the Borrowers by a Lender, or
by an Agent on its own behalf or on behalf of a Lender, shall be conclusive
absent manifest error.

          (d)  As soon as practicable after any payment of Indemnified Taxes or
Other Taxes by the Borrowers to a Governmental Authority, the Borrowers shall
deliver to the Payment Agent the original or a certified copy of a receipt
issued by such Governmental Authority
<PAGE>

                                                                              32

evidencing such payment, a copy of the return reporting such payment or other
evidence of such payment reasonably satisfactory to the Payment Agent.

          (e)  Any Foreign Lender that is entitled to an exemption from or
reduction of withholding tax under the law of the jurisdiction in which a
Borrower is located, or any treaty to which such jurisdiction is a party, with
respect to payments under this Agreement shall deliver to the Borrowers (with
copies to the Co-Administrative Agents), at the time or times prescribed by
applicable law, such properly completed and executed documentation prescribed by
applicable law or reasonably requested by the Borrowers as will permit such
payments to be made without withholding or at a reduced rate.

          (f)  If an Agent or a Lender determines in good faith, that it has
received a refund of any Taxes or Other Taxes as to all or a portion of which it
has been indemnified by a Borrower or with respect to all or a portion of which
a Borrower has paid additional amounts pursuant to this Section 2.15, it shall
pay over such refund to such Borrower (but only to the extent of indemnity
payments made, or additional amounts paid, by such Borrower under this Section
2.15 with respect to the Taxes or Other Taxes giving rise to such refund), net
of all out-of-pocket expenses of such Agent or such Lender and without interest
(other than any interest paid by the relevant Governmental Authority with
respect to such refund); provided, that such  Borrower, upon the request of such
Agent or such Lender, agrees to repay the amount paid over to such Borrower
(plus any penalties, interest or other charges imposed by the relevant
Governmental Authority) to such Agent or such Lender in the event such Agent or
such Lender is required to repay such refund to such Governmental Authority.
This Section shall not be construed to require any Agent or any Lender to make
available its tax returns (or any other information relating to its taxes which
it deems confidential) to any Borrower or any other Person.

          SECTION 2.16.  Payments Generally; Pro Rata Treatment; Sharing of
Setoffs. (a) Each Borrower shall make each payment required to be made by it
hereunder or under any other Loan Document (whether of principal, interest or
fees, or of amounts payable under Section 2.13, 2.14 or 2.15, or otherwise)
prior to 2:00 p.m., New York City time, on the date when due, in immediately
available funds, without setoff or counterclaim. Any amounts received after such
time on any date may, in the discretion of the Payment Agent, be deemed to have
been received on the next succeeding Business Day for purposes of calculating
interest thereon. All such payments shall be made to the Payment Agent at its
offices at 270 Park Avenue, New York, New York, except that payments pursuant to
Sections 2.13, 2.14 or 2.15 or 10.03 shall be made directly to the Persons
entitled thereto. The Payment Agent shall distribute any such payments received
by it for the account of any other Person to the appropriate recipient promptly
following receipt thereof. If any payment under any Loan Document shall be due
on a day that is not a Business Day, the date for payment shall be extended to
the next succeeding Business Day, and, in the case of any payment accruing
interest, interest thereon shall be payable for the period of such extension.
All payments hereunder shall be made in Dollars. Any payment required to be made
by the Payment Agent hereunder shall be deemed to have been made by the time
required if the Payment Agent shall, at or before such time, have taken the
necessary steps to make such payment in accordance with the regulations or
operating procedures of the clearing or settlement system used by the Payment
Agent to make such payment.
<PAGE>

                                                                              33

          (b)  If at any time insufficient funds are received by and available
to the Payment Agent to pay fully all amounts of principal, interest and fees
then due hereunder, such funds shall be applied (i) first, towards payment of
interest and fees then due hereunder, ratably among the parties entitled thereto
in accordance with the amounts of interest and fees then due to such parties,
and (ii) second, towards payment of principal then due hereunder, ratably among
the parties entitled thereto in accordance with the amounts of principal then
due to such parties.

          (c)  If any Lender shall, by exercising any right of set off or
counterclaim or otherwise, obtain payment in respect of any principal of or
interest on any of its Loans resulting in such Lender receiving payment of a
greater proportion of the aggregate amount of its Loans and accrued interest
thereon than the proportion received by any other Lender, then the Lender
receiving such greater proportion shall purchase (for cash at face value)
participations in the Loans of other Lenders to the extent necessary so that the
benefit of all such payments shall be shared by the Lenders ratably in
accordance with the aggregate amount of principal of and accrued interest on
their respective Loans; provided that (i) if any such participations are
purchased and all or any portion of the payment giving rise thereto is
recovered, such participations shall be rescinded and the purchase price
restored to the extent of such recovery, without interest, and (ii) the
provisions of this paragraph shall not be construed to apply to any payment made
by a Borrower pursuant to and in accordance with the express terms of this
Agreement or any payment obtained by a Lender as consideration for the
assignment of or sale of a participation in any of its Loans to any assignee or
participant, other than to a Borrower or any Subsidiary or Affiliate thereof (as
to which the provisions of this paragraph shall apply).  Each Borrower consents
to the foregoing and agrees, to the extent it may effectively do so under
applicable law, that any Lender acquiring a participation pursuant to the
foregoing arrangements may exercise against such Borrower's rights of setoff and
counterclaim with respect to such participation as fully as if such Lender were
a direct creditor of such Borrower in the amount of such participation.

          (d)  Unless the Payment Agent shall have received notice from the
applicable Borrower prior to the date on which any payment is due to the Payment
Agent for the account of the Lenders hereunder that such Borrower will not make
such payment, the Payment Agent may assume that such Borrower has made such
payment on such date in accordance herewith and may, in reliance upon such
assumption, distribute to the Lenders, the amount due. In the event, if such
Borrower has not in fact made such payment, then each of the Lenders severally
agrees to repay to the Payment Agent forthwith on demand the amount so
distributed to such Lender with interest thereon, for each day from and
including the date such amount is distributed to it to but excluding the date of
payment to the Payment Agent, at the greater of the Federal Funds Effective Rate
and a rate determined by the Payment Agent in accordance with banking industry
rules on interbank compensation.

          (e)  If any Lender shall fail to make any payment required to be made
by it pursuant to Section 2.05(b) or 2.16(d), then the Payment Agent may, in its
discretion (notwithstanding any contrary provision hereof), apply any amounts
thereafter received by the Payment Agent for the account of such Lender to
satisfy such Lender's obligations under such Sections until all such unsatisfied
obligations are fully paid.
<PAGE>

                                                                              34

          SECTION 2.17.  Mitigation Obligations; Replacement of Lenders. (a) If
any Lender requests compensation under Section 2.13, or if a Borrower is
required to pay any additional amount to any Lender or any Governmental
Authority for the account of any Lender pursuant to Section 2.15; then such
Lender shall use reasonable efforts (consistent with its internal policy and
legal and regulatory restrictions) to designate a different lending office for
funding or booking its Loans hereunder or to assign its rights and obligations
hereunder to another of its offices, branches or affiliates if, in the
reasonable judgment of such Lender, such designation or assignment (i) would
eliminate or reduce amounts payable pursuant to Section 2.13 or 2.15 as the case
may be, in the future and (ii) would not subject such Lender to any unreimbursed
cost or expense and would not otherwise be disadvantageous to such Lender. Each
Borrower hereby agrees, jointly and severally to pay all reasonable costs and
expenses incurred by any Lender in connection with any such designation or
assignment.

          (b)  If any Lender requests compensation under Section 2.13, or if a
Borrower is required to pay any additional amount to any Lender or any
Governmental Authority for the account of any Lender pursuant to Section 2.15,
or if any Lender defaults in its obligation to fund Loans hereunder, then the
Borrowers may upon notice to such Lender and the Payment Agent, require such
Lender to assign and delegate, without recourse, all its interests, rights and
obligations under this Agreement (other than any outstanding Competitive Loans
held by it) to an assignee that shall assume such obligations (which assignee
may be another Lender if a Lender accepts such assignment); provided that (i)
the Borrowers shall have received the prior written consent of the Payment Agent
to the identity of the assignee (if not then a Lender), which consent shall not
unreasonably be withheld or delayed and (ii) such Lender shall have received
payment of an amount equal to the outstanding principal of its Revolving Loans,
accrued interest thereon, accrued fees and all other amounts payable to it
hereunder, from the assignee (to the extent of such outstanding principal and
accrued interest and fees) or the Borrowers (in the case of all other amounts).

                                  ARTICLE III

                        Representations and Warranties

          Each of the Borrowers represents and warrants to the Lenders that:

          SECTION 3.01.  Corporate Existence. Each Borrower and each Material
Subsidiary: (a) is a business entity duly organized, validly existing and in
good standing under the laws of the jurisdiction of its organization; (b) has
all requisite corporate or other power, and has all material governmental
licenses, authorizations, consents and approvals, necessary to own its assets
and carry on its business as now being conducted; and (c) is qualified to do
business and is in good standing in all jurisdictions in which the failure to so
qualify could reasonably be expected to have a Material Adverse Effect.

          SECTION 3.02.  Certain Financial Information. (a) Financial Condition
of Northrop Operating. The consolidated statement of financial position of
Northrop Operating and its subsidiaries (i) as at December 31, 1999, and the
related consolidated statements of operations, changes in shareholders' equity
and cash flows of Northrop Operating and its subsidiaries for the
<PAGE>

                                                                              35

fiscal year ended on said date, with the opinion thereon of Deloitte & Touche
LLP, and (ii) as at September 30, 2000, and the respective related consolidated
statements of operations, changes in stockholders' equity and cash flows of
Northrop Operating and its subsidiaries for the fiscal quarter and portion of
the fiscal year then ended, certified by the chief financial officer of Northrop
Operating, in each case as heretofore furnished to each of the Lenders, are
complete and present fairly, in all material respects, the consolidated
financial condition of Northrop Operating and its subsidiaries as at said dates
and the consolidated results of their operations for such periods, all in
accordance with GAAP applied on a consistent basis, subject to year-end audit
adjustments and the absence of footnotes in the case of the statements referred
to in clause (ii) above. Neither Northrop Operating nor any of its subsidiaries
had on said dates any material contingent liabilities, liabilities for taxes,
unusual forward or long-term commitments or unrealized or anticipated losses
from any unfavorable commitments, except as referred to or reflected or provided
for in said statements of financial position as at said dates. Except as
expressly disclosed in writing to the Lenders prior to the date hereof, since
December 31, 1999, there has been no material adverse change in the consolidated
financial condition or operations, or the prospects or business, taken as a
whole, of Northrop Operating and its subsidiaries from that set forth in said
financial statements as at said date.

          (b)  Financial Condition of Litton Operating. The consolidated
statement of financial position of Litton Operating and its subsidiaries (i) as
at July 31, 2000, and the respective related consolidated statements of income,
stockholders' equity and cash flows of Litton Operating and its subsidiaries for
the period ended on such date, with the opinion thereon of Deloitte & Touche
LLP, and (ii) as at October 31, 2000, and the related consolidated statements of
income, stockholders' equity and cash flows of Litton Operating and its
subsidiaries for the fiscal quarter and portion of the fiscal year then ended,
certified by the chief financial officer of Litton Operating, in each case as
heretofore furnished to each of the Lenders, are complete and present fairly, in
all material respects, the consolidated financial condition of Litton Operating
and its subsidiaries as at said dates and the consolidated results of their
operations for such periods, all in accordance with GAAP applied on a consistent
basis, subject to year-end audit adjustments and the absence of footnotes in the
case of the statements referred to in clause (ii) above, except, in each case,
for matters not known to the Company or Northrop Operating that would not,
individually or in the aggregate, be material and adverse to the consolidated
financial condition or operations, or the prospects or business, of the Company
and the Subsidiaries (including Litton Operating and its subsidiaries) taken as
a whole, giving pro forma effect to the Transactions. As of the date hereof,
except as expressly disclosed in writing to the Lenders prior to the date
hereof, since July 31, 2000, there has been no material adverse change in the
consolidated financial condition or operations, or the prospects or business,
taken as a whole, of Litton Operating and its subsidiaries from that set forth
in said financial statements as at July 31, 2000.

          (c)  Projections. The Company has heretofore furnished to each of the
Lenders projected consolidated financial statements of the Company and the
Subsidiaries (including Litton Operating), on an annual basis through and
including 2007. Such projected financial statements set forth projected
consolidated balance sheets of the Company and such Subsidiaries and projected
consolidated statements of operations, changes in stockholders' equity and cash
flows of the Company and such Subsidiaries (giving effect to the Acquisition and
the related financing thereof, as if they had occurred on January 1, 2001) for
the respective fiscal periods covered thereby. Such
<PAGE>

                                                                              36

projected financial statements are based upon assumptions believed by the
Company to be reasonable as of the date hereof (it being understood that such
projections are subject to uncertainty).

          SECTION 3.03.  Litigation.  There are no legal or arbitral proceedings
or any proceedings by or before any Governmental Authority, now pending or (to
the knowledge of any of the Borrowers) threatened against the Company or any
Material Subsidiary which, if adversely determined, would be reasonably likely
to result in any Material Adverse Effect, except as heretofore disclosed to the
Lenders in Northrop Operating's Annual Report on Form 10-K for the year ended
December 31, 1999, Litton Operating's Annual Report on Form 10-K for the year
ended July 31, 2000, Northrop Operating's Quarterly Reports on Form 10-Q for the
quarters ended March 31, June 30 and September 30, 2000 and Litton Operating's
Quarterly Reports on Form 10-Q for the quarters ended January 31, April 30, and
October 31, 2000, copies of which have been furnished to the Lenders, or in
Schedule 3.03.

          SECTION 3.04.  No Breach. Except as expressly disclosed in writing to
the Lenders on or before the date hereof, none of the Transactions will conflict
with or result in a breach of, or require any consent under, the charters or by-
laws of any of the Borrowers, or any applicable law or regulation, or any order,
writ, injunction or decree of any court or Governmental Authority, or any
material agreement or instrument to which the Company or any Material Subsidiary
(including Litton Operating and any of its subsidiaries that are Material
Subsidiaries) is a party or by which any of them is bound or to which any of
them is subject, or constitute a material default under any such material
agreement or instrument, or result in the creation or imposition of any Lien
upon any of the revenues or assets of the Company or any such Subsidiary
pursuant to the terms of any such material agreement or instrument.

          SECTION 3.05.  Corporate Action. Each of the Borrowers has all
necessary corporate power and authority to execute, deliver and perform its
obligations under the Loan Documents and, in the case of the Borrower, to borrow
the Loans hereunder; and the execution, delivery and performance by each of the
Borrowers of the Loan Documents and the borrowing of the Loans hereunder have
been duly authorized by all necessary corporate action on its part; and this
Agreement has been duly and validly executed and delivered by each of the
Borrowers and constitutes, and each of the other Loan Documents (assuming in the
case of any promissory notes issued hereunder, execution and delivery thereof
for value) will constitute, legal, valid and binding obligations of each of the
Borrowers, enforceable in accordance with its terms, except as such
enforceability may be limited by (a) bankruptcy, insolvency, reorganization,
moratorium or other similar laws of general applicability affecting the
enforcement of creditors' rights and (b) the application of general principles
of equity (regardless of whether such enforceability is considered in a
proceeding in equity or at law).

          SECTION 3.06.  Approvals. No authorizations, approvals, consents or
licenses of, and no filings or registrations with, any Governmental Authority
are necessary to authorize or are necessary in connection with (i) the
execution, delivery and performance of any Loan Document or the Merger
Agreement, (ii) the legality, validity, binding effect or enforceability of any
Loan Document or the Merger Agreement or (iii) the borrowing of the Loans
hereunder or the consummation of the other Transactions, in each case other than
those which have been or
<PAGE>

                                                                              37

concurrently with the effectiveness hereof shall be duly obtained, given or
made, except consents of the Government set forth in Schedule 3.06, which are
required with respect to the transfer to Northrop Operating of contracts between
Litton Operating or its subsidiaries and the Government and which none of the
Borrowers has any reason to believe will not be obtained in due course.

          SECTION 3.07.  Use of Proceeds, Etc. Neither the making of any Loan
hereunder, nor the use of the proceeds thereof, will violate the provisions of
Regulation U or X of the Board of Governors of the Federal Reserve System and no
part of the proceeds of any Loan will be used to purchase or carry any Margin
Stock in violation of Regulation U or X or to extend credit for the purpose of
purchasing or carrying any Margin Stock in violation of Regulation U or X.
Neither the Company nor any of the Subsidiaries is engaged principally, or as
one of its primary activities, in the business of extending credit for the
purpose of purchasing or carrying Margin Stock.

          SECTION 3.08.  ERISA. Each of the Company and the ERISA Affiliates has
fulfilled its obligations under the minimum funding standards of ERISA and the
Code with respect to each Plan, is in compliance in all material respects with
the applicable provisions of ERISA and the Code and has not incurred any
liability to the PBGC or any Plan or Multiemployer Plan (other than a liability
to make payments or contributions in the ordinary course of business). No
Termination Event has occurred and is continuing.

          SECTION 3.09.  Taxes. United States Federal income tax returns of
Northrop Operating and its subsidiaries and Litton Operating and its
subsidiaries have been filed through 1999 and examined and reported on by the
Internal Revenue Service or closed by applicable statutes and satisfied through
the fiscal year of Northrop Operating ended December 31, 1991 and the fiscal
year of Litton Operating ended October 31, 1985, respectively. Each of Northrop
Operating and its subsidiaries, and Litton Operating and its subsidiaries has
filed all United States Federal and State income tax returns which are required
to be filed by it and has paid all taxes due pursuant to such returns or
pursuant to any assessment received by Northrop Operating and its subsidiaries,
or Litton Operating and its subsidiaries, to the extent that such taxes have
become due (except as to such taxes which are being contested in good faith by
appropriate proceedings). The charges, accruals and reserves on the books of the
Company and the Subsidiaries in respect of taxes and other governmental charges
are, in the opinion of each of the Borrowers, adequate. The California Franchise
tax returns of Northrop Operating have been examined and reported on by the
California Franchise Tax Board or closed by applicable statutes and satisfied
for all fiscal years prior to, and including, the fiscal year ended December 31,
1999.

          SECTION 3.10.  Funded Debt. As of the Effective Date, after giving
effect to the Transactions, no default exists under the provisions of any
instrument evidencing Funded Debt in an outstanding principal amount in excess
of $50,000,000 or of any agreement relating thereto.

          SECTION 3.11.  Properties. The Company has, and each of the Material
Subsidiaries has, good and marketable title to its respective material
properties and assets, including the properties and assets reflected in the
balance sheet as at December 31, 1999 herein above described in Section 3.02 (a)
(other than Properties disposed of in the ordinary course of business), subject
to no Lien of any kind except Liens permitted by Section 6.05.
<PAGE>

                                                                              38

          SECTION 3.12.  Environmental Matters. (a) Except as disclosed in
Northrop Operating's Annual Report on Form 10-K for the fiscal year ended
December 31, 1999 and Litton Operating's Annual Report on Form 10-K for the
fiscal year ended July 31, 2000, neither the Company nor any Subsidiary
(including Litton Operating and its subsidiaries) (i) has received notice or
otherwise obtained knowledge of any claim, demand, action, event, condition,
report or investigation indicating or concerning any potential or actual
liability which, individually or in the aggregate, could reasonably be expected
to have a Material Adverse Effect arising in connection with: (1) any non-
compliance with or violation of the requirements of any applicable Federal,
state and local environmental health and safety statutes and regulations or (2)
the release or threatened release of toxic or hazardous waste, substance or
constituent, or other substance into the environment, (ii) to the best knowledge
of each of the Borrowers, has any threatened or actual liability in connection
with the release or threatened release of any toxic or hazardous waste,
substance or constituent, or other substance into the environment which,
individually or in the aggregate, could reasonably be expected to have a
Material Adverse Effect, (iii) has received notice or otherwise obtained
knowledge of any Federal or state investigation evaluating whether any remedial
action is needed to respond to a release or threatened release of any toxic or
hazardous waste, substance or constituent or other substance into the
environment for which the Company or any such Subsidiary, is or may be liable,
which remedial action would have a Material Adverse Effect or (iv) has received
notice that the Company or any such Subsidiary, is or may be liable to any
Person under the Comprehensive Environmental Response, Compensation, and
Liability Act, as amended, 42 U.S.C. (S)9601 et seq. ("CERCLA"), or any
analogous state law, which liability would have a material Adverse Effect.

          (b)  Each of the Company and each Subsidiary (including Litton
Operating and each of its subsidiaries) is in compliance in all material
respects with the financial responsibility requirements of all Environmental
Laws, including, those contained in 40 C.F.R., Parts 264 and 265, Subpart H, and
any similar state law requirements.

          SECTION 3.13.  True and Complete Disclosure. All factual information
(taken as a whole) furnished on or before the Effective Date by or on behalf of
the Company or the Subsidiaries in writing to any Co-Administrative Agent or
Lender (including, all factual information contained in the Information
Memorandum) for purposes of or in connection with this Agreement or any
transaction contemplated herein is, and all other such factual information
(taken as a whole) furnished after the Effective Date by or on behalf of the
Company or the Subsidiaries in writing to the Co-Administrative Agents or any
Lender will be, true and accurate in all material respects on the date as of
which such information is dated or certified and not incomplete by omitting to
state any material fact necessary to make such information (taken as a whole)
not misleading at such time in light of the circumstances under which such
information was provided. There is no fact known to any of the Borrowers which
has, or is reasonably likely to have, a Material Adverse Effect which has not
been disclosed herein or in such other documents, certificates and statements
furnished to the Lenders for use in connection with the transactions
contemplated hereby.

          SECTION 3.14.  Acquisition.  On and as of the Effective Date, all
material consents and approvals of, and filings and registrations with, and all
other actions in respect of, all Governmental Authorities required in order to
make or consummate the Acquisition, or otherwise
<PAGE>

                                                                              39

required in connection with the Acquisition, will have been obtained, given,
filed or taken and are or will be in full force and effect (or effective
judicial relief with respect thereto will have been obtained) (except with
respect to any vote of the stockholders of Litton Operating that may be required
to effect the Litton Merger, in the event that less than 90% of the outstanding
common stock of Litton Operating shall have been acquired by Litton Merger Sub
in the Exchange Offer). All actions pursuant to or in furtherance of the
Acquisition have been and will be taken in compliance with all applicable laws.

                                  ARTICLE IV

                                  Conditions

          SECTION 4.01.  Effective Date. The obligations of the Lenders to make
Loans hereunder shall not become effective until the date on which each of the
following conditions is satisfied (or waived in accordance with Section 10.02 or
provided for, in the case of the conditions set forth in paragraphs (a), (b),
(c) and (e) below insofar as they relate to Litton Operating, in the manner
described in Section 10.14):

          (a)  Execution of Agreement.  The Co-Administrative Agents (or their
               -----------------------
counsel) shall have received from each party hereto (including Litton Operating,
as provided in Section 10.14) either (i) a counterpart of this Agreement signed
on behalf of such party or (ii) written evidence satisfactory to the Co-
Administrative Agents (which may include telecopy transmission of a signed
signature page of this Agreement) that such party has signed a counterpart of
this Agreement.

          (b)  Corporate Documents.  Certified copies of the certificates of
               --------------------
incorporation and the by-laws of each of the Borrowers and of all corporate
action taken by each of the Borrowers approving each Loan Document and the
borrowings by the Borrowers hereunder (including, a certificate setting forth
the resolutions of the Board of Directors of each of the Borrowers adopted in
respect of the transactions contemplated thereby).

          (c)  Incumbency Certificate.  A certificate of the Secretary of each
               -----------------------
of the Borrowers, dated the Effective Date, in respect of the incumbency and
specimen signature of each of the officers (i) who is authorized to sign the
Loan Documents on such Borrower's behalf and (ii) who will, until replaced by
another officer or officers duly authorized for that purpose, act as such
Borrower's representative for the purposes of signing documents and giving
notices and other communications in connection with the Loan Documents and the
transactions contemplated thereby.  The Co-Administrative Agents and each of the
Lenders may conclusively rely on such certificates until it receives notice in
writing from the applicable Borrower to the contrary.

          (d)  Officer's Certificate.  A certificate of a senior officer of the
               ----------------------
Company, dated the Effective Date, to the effect set forth in clauses (a) and
(b) of Section 4.02 hereof (after giving effect to the consummation of the
Acquisition).
<PAGE>

                                                                              40

          (e)  Opinions.  (i)  An opinion of Sheppard, Mullin, Richter & Hampton
               ---------
LLP, counsel for the Company and Northrop Operating, dated the Effective Date,
substantially in the form of Exhibit B-1 hereto, (ii) an opinion of John Mullan,
Esq., Assistant General Counsel of Northrop Operating, dated the Effective Date,
substantially in the form of Exhibit B-2 hereto, (iii) an opinion of W. Burks
Terry, General Counsel of Litton Operating, dated the Effective Date,
substantially in the form of Exhibit B-3 hereto, (iv) an opinion of Kaye,
Scholer LLP, special New York counsel for the Borrowers, dated the Effective
Date, substantially in the form of Exhibit B-4 hereto (and each Borrower hereby
instructs each such counsel to deliver such opinions to the Lenders and the Co-
Administrative Agents).

          (f)  Promissory Notes.  To the extent requested by any Lenders,
               -----------------
promissory notes evidencing the Loans of such Lenders, duly completed and
executed and delivered.

          (g)  Merger Agreement.  (i)  A true and complete copy of the Merger
               -----------------
Agreement (which shall include copies of all amendments, schedules, exhibits and
other attachments thereto), together with true and complete copies of each
material document, certificate and opinion referred to in or delivered in
connection therewith, and (ii) a certificate of a senior officer of the Company,
dated the Effective Date, to the effect that (x) the Merger Agreement and all
related documentation have been duly executed and delivered by each of the
parties thereto and are in full force and effect on the Effective Date and (y)
the provisions of the Merger Agreement and such related documentation have not
been amended, waived or otherwise modified, or executed and delivered in forms
other than the forms delivered to the Co-Administrative Agents prior to the date
hereof.

          (h)  Consummation of the Exchange Offer.  A certificate of a senior
               -----------------------------------
officer of the Company, dated the Effective Date, to the effect that (i) the
Exchange Offer shall have been consummated and there shall have been validly
tendered thereunder and not withdrawn a majority of the capital stock of Litton
Operating, such that Litton Merger Sub would be able to consummate the Litton
Merger without the vote of any other stockholder of Litton Operating, in each
case in accordance with applicable law; (ii) all conditions to the consummation
of the Exchange Offer as set forth in the Merger Agreement have been (or will
concurrently be) fulfilled or waived by the parties thereto (which waiver, in
the case of any waiver by the Company or Northrop Operating, shall be given only
with the consent of the Lenders, and which conditions, in the case of conditions
to be fulfilled to the satisfaction of the Company or Northrop Operating, shall
be fulfilled to the satisfaction of the Co-Administrative Agents); and (iii) the
Northrop Merger shall have been consummated and Northrop Operating shall be a
Wholly Owned Subsidiary of the Company.

          (i)  Terms of Acquisition.  A certificate of a senior officer of the
               ---------------------
Company, dated the Effective Date, to the effect that (i) the cash portion of
the purchase price paid by the Company in the Acquisition will not exceed
$4,000,000,000 and (ii) the fees and expenses relating to the Acquisition will
be substantially consistent with the amount set forth in the table of sources
and uses heretofore furnished to the Co-Administrative Agents.

          (j)  Payment of Fees and Expenses.  Evidence that (i) all principal of
               -----------------------------
and interest on the loans under the Existing Credit Agreements and the
Refinanced Debt shall have been (or will concurrently be) paid in full and (ii)
all fees and expenses payable under the Existing Credit Agreements and the
Refinanced Debt accrued to the Effective Date and unpaid and all costs, fees
<PAGE>

                                                                              41

and expenses, and all other compensation contemplated by the Loan Documents and
by the Fee Letter dated January 29, 2001 among the Borrowers and the Co-
Administrative Agents (including, legal fees and expenses) shall have been (or
will concurrently be) paid by the Borrowers to the extent due.

          (k)  Senior Securities; Other Indebtedness and Preferred Stock.  After
               ----------------------------------------------------------
giving effect to the Transactions and the other transactions contemplated
hereby, the Company and its Subsidiaries shall have outstanding no Indebtedness
or preferred stock other than the Loans under the Loan Documents, Indebtedness
under Working Capital Credit Lines, Indebtedness under the 364-Day Credit
Agreement, the Senior Securities, the preferred stock issued by the Company in
connection with the Exchange Offer and any Indebtedness disclosed in [refer to
pro forma financial statements included in Exchange Offer documents].

          (l)  Litigation.  Except as set forth on Schedule 3.03, no litigation
               -----------
administrative or procedural action by any entity (private or governmental)
shall be pending or threatened against any of the Borrowers (a) with respect to
this Agreement or any other Loan Document, (b) that could reasonably be expected
to restrain, prevent or impose burdensome conditions on the Transactions or (c)
which the Required  Lenders shall reasonably determine would be likely to have a
Material Adverse Effect.

          (m)  Miscellaneous.  The Co-Administrative Agents shall have received
               --------------
such other documents as the Co-Administrative Agents or any Lender shall
reasonably have requested.

The Payment Agent shall promptly notify each Lender of the occurrence of the
Effective Date.

          SECTION 4.02. Initial and Subsequent Loans.  The obligation of any
Lender to make any Loan to the Borrowers upon the occasion of each borrowing
hereunder is subject to the further conditions precedent that, as of the date of
such Loan and after giving effect thereto:

          (a)  no Default shall have occurred and be continuing; and

          (b)  the representations and warranties made by the Borrowers in
     Article III hereof shall be true in all material respects on and as of the
     date of the making of such Loan with the same force and effect as if made
     on and as of such date (except to the extent such representations or
     warranties expressly relate to an earlier date, in which case they shall be
     true in all material respects as of such earlier date).

Each notice of or request for a Borrowing by a Borrower hereunder shall
constitute a certification by the Borrowers to the effect set forth in the
preceding sentence (both as of the date of such notice and, unless any of the
Borrowers otherwise notifies the Payment Agent prior to the date of such
borrowing, as of the date of such borrowing).
<PAGE>

                                                                              42

                                   ARTICLE V

                             Affirmative Covenants

          Until the Commitments have expired or been terminated and the
principal of and interest on each Loan and all fees payable hereunder shall have
been paid in full, each of the Borrowers covenants and agrees with the Lenders
as to itself and its subsidiaries that:

          SECTION 5.01.  Financial Statements.  The Company shall deliver to
each of the Lenders and to the Co-Administrative Agents:

          (a)  within 105 days after the end of each fiscal year of the Company,
     (i) a consolidated statement of financial position of the Company and the
     Subsidiaries as at the close of such fiscal year and consolidated
     statements of operations, changes in stockholders' equity and cash flows of
     the Company and the Subsidiaries for such year, certified by Deloitte &
     Touche LLP or by other independent public accountants selected by the
     Company and reasonably satisfactory to the Co-Administrative Agents and
     (ii) the Consolidating Financial Statements for such year;

          (b)  within 60 days after the end of each of the first three fiscal
     quarters of each fiscal year of the Company, (i) an unaudited consolidated
     statement of financial position of the Company and the Subsidiaries as at
     the end of such quarter and unaudited consolidated statements of
     operations, changes in stockholders' equity and cash flows of the Company
     and the Subsidiaries for such quarter and for the period from the beginning
     of the fiscal year to the end of such quarter, certified by an authorized
     financial or accounting officer of the Company and (ii) the Consolidating
     Financial Statements for such fiscal quarter;

          (c)  promptly upon becoming available, copies of all financial
     statements, reports, notices, proxy statements and final prospectuses sent
     by the Company to stockholders or by any of the Borrowers to the SEC;

          (d)  subject to Government restrictions, such other statement or
     statements of the position and affairs of the Company and of the
     Subsidiaries and the status of their contracts, open accounts and budgets
     or forecasts, and other financial information, as may be reasonably
     requested by the Co-Administrative Agents;

          (e)  with each of the audited financial statements required to be
     delivered under Section 5.01(a), a certificate by the independent public
     accountants certifying such statements to the effect that they are familiar
     with the provisions of this Agreement and that, in making the examination
     necessary for their opinion on such financial statements, nothing came to
     their attention that caused them to believe that the Company was not in
     compliance with this Agreement insofar as it relates to accounting matters
     or, if the contrary is the case, specifying the nature of such non-
     compliance;
<PAGE>

                                                                              43

          (f)  with each of the financial statements required to be delivered
     under Section 5.01(a) or Section 5.01(b), a statement by an authorized
     financial or accounting officer of the Company to the effect that no
     Default has occurred and is continuing, or if any Default has occurred and
     is continuing, describing such Default and the action taken or proposed to
     be taken by the Company with respect thereto, and a detailed computation,
     in form and substance satisfactory to the Co-Administrative Agents, of the
     financial calculations required in Sections 6.08, 6.09 and 6.10;

          (g)  (x) promptly after each of Moody's and S&P first either reaffirms
     or announces revised ratings for the Senior Long Term Debt after the
     consummation of the Acquisition and (y) thereafter, promptly after (1)
     either Moody's or S&P first announces or publishes a revised rating for the
     Senior Long Term Debt or (2) either Moody's or S&P ceases to rate the
     Senior Long Term Debt, notice thereof; and

          (h)  promptly after the Company knows or has reason to know that any
     Default has occurred, a notice of such Default describing the same in
     reasonable detail and, together with such notice or as soon thereafter as
     is reasonably practicable, a description of the action that the Company has
     taken or proposes to take with respect thereto in such detail as the
     Company reasonably believes to be appropriate.

For the purposes of this section, the Company's obligation to deliver the items
referred to in clauses (a), (b) and (c) above will be deemed satisfied by the
posting of such items on a web site to which the Lenders have access, and which
shall have been designated in a notice delivered to the Lenders and the Co-
Administrative Agents.

          SECTION 5.02.  Existence, Payment of Taxes, ERISA, Etc. Each Borrower
shall, and shall cause each of the Material Subsidiaries to:

          (a)  preserve and maintain its legal existence and all of its material
     rights, privileges, licenses and franchises (provided that nothing in this
     Section 5.02 shall prohibit any transaction expressly permitted under
     Section 6.02 or 6.04 hereof);

          (b)  comply in all material respects with the requirements of all
     applicable laws, rules, regulations and orders of governmental or
     regulatory authorities if failure to comply with such requirements is
     reasonably likely (either individually or in the aggregate) to have a
     Material Adverse Effect;

          (c)  promptly pay and discharge all taxes, assessments and
     governmental charges prior to the date on which material penalties attach
     thereto, but only to the extent that such taxes, assessments and charges
     shall not be contested in good faith and by appropriate proceedings by the
     Company or such Material Subsidiary; and

          (d)  maintain all of its Properties used or useful in its business in
     good working order and condition, ordinary wear and tear excepted.
<PAGE>

                                                                              44

               The Company shall furnish to the Payment Agent the following:

               (i)   As soon as possible and in any event within 30 days after
     the Company know or has reason to know that any Termination Event has
     occurred, a statement of a senior financial or accounting officer of the
     Company describing such Termination Event and the action, if any, which the
     Company proposes to take with respect thereto;

               (ii)  Promptly after receipt thereof by the Company, copies of
     each notice received from the PBGC of its intention to terminate any Plan
     or to have a trustee appointed to administer any Plan; and

               (iii) Promptly after request therefor, such other documents and
     information relating to any Plan as the Co-Administrative Agents may
     reasonably request from time to time.

               SECTION 5.03.  Notice of Litigation. The Company shall promptly
give notice in writing to the Co-Administrative Agents (which shall promptly
notify the Lenders) of any litigation or proceeding against the Company or any
Subsidiary if in the opinion of the General Counsel of the Company (or any
individual acting in such capacity) such action or proceeding is reasonably
likely to have a Material Adverse Effect. Without limiting the generality of the
foregoing, the Company shall give notice in writing to the Co-Administrative
Agents (which will promptly notify each Lender) of the assertion of any claim by
any Person of violation of or non-compliance with any Environmental Laws
against, or with respect to the activities of, the Company or any Subsidiary,
and notice of any alleged violation of or non-compliance with any Environmental
Laws or any permits, licenses or authorizations under Environmental Laws if in
the opinion of the General Counsel of the Company (or any individual acting in
such capacity) such claim or violation or non-compliance is reasonably likely
(either individually or in the aggregate) to have a Material Adverse Effect.

               SECTION 5.04.  Insurance. The Company shall maintain, and cause
each Subsidiary to maintain, insurance with responsible companies in such
amounts and against such risks as is usually carried by owners of similar
businesses and Property in the same general area in which the Company or such
Subsidiary operates, including reasonable war, comprehensive and commercial risk
insurance, when and if available, subject to such deductibles, receptions and
self insurance programs as the Company deems appropriate.

               SECTION 5.05.  Access to Books and Properties. The Company shall:

               (a)  keep adequate records and books of account, in which
     complete entries will be made in accordance with GAAP consistently applied;
     and

               (b)  as may be reasonably requested, give any representatives of
     the Lenders reasonable access, subject to restrictions imposed by
     Governmental Authorities and customer confidentiality agreements, during
     normal business hours to, and permit them to examine, copy or make extracts
     from, any and all books, records and documents in the
<PAGE>

                                                                              45

     possession of the Company or any Subsidiary relating to its affairs and to
     inspect any Properties of the Company or any Subsidiary.

          SECTION 5.06.  Ratings by Moody's and S&P. The Company will at all
times use commercially reasonable efforts to cause Moody's and S&P (or, if
applicable, a Substitute Rating Agency) to have in effect ratings for the Senior
Long Term Debt.

          SECTION 5.07.  Consummation of Merger. The Company will cause (a) the
Northrop Merger to be consummated on or prior to the Effective Date and (b) the
Litton Merger to be consummated as promptly as practicable following the
Effective Date.

                                  ARTICLE VI

                              Negative Covenants

          Until the Commitments have expired or terminated and the principal of
and interest on each Loan and all fees payable hereunder have been paid in full,
each of the Borrowers covenants and agrees with the Lenders as to itself and its
subsidiaries that:

          SECTION 6.01. Restricted Payments. The Company shall not declare, pay
or authorize any Restricted Payment if (a) any such Restricted Payment is not
paid out of Consolidated Net Income Available for Restricted Payments, (b) at
the time of, and immediately after, the making of any such Restricted Payment
(or the declaration of any dividend except a stock dividend) a Default has
occurred and remains continuing or (c) the making of any such Restricted Payment
would cause the Leverage Ratio to exceed the percentage which the Company will
be required to maintain as of the next Fiscal Date pursuant to Section 6.08.

          SECTION 6.02. Asset Dispositions. The Company shall not, and shall not
permit any of its Subsidiaries to, sell, transfer, lease or otherwise dispose of
any asset, including any Equity owned by it in any other Person, nor shall the
Company permit any of its Subsidiaries to issue any additional Equity in such
Subsidiary, except:

          (a)  sales of inventory, used or surplus equipment, surplus real
     estate and Permitted Investments in the ordinary course of business;

          (b)  sales, transfers and dispositions to the Company or a Subsidiary;

          (c)  sales, transfers and dispositions for which the Company and the
     Subsidiaries receive consideration with a value of less than $10,000,000
     for any individual transaction or series of related transactions; and

          (d)  sales, transfers and other dispositions of assets (other than
     Equity in a Subsidiary) that are not permitted by any other clause of this
     Section; provided that the aggregate fair market value of all assets sold,
     transferred or otherwise disposed of in reliance upon this clause (d) after
     the date hereof shall not exceed 20% of the consolidated
<PAGE>

                                                                              46

     assets of the Company as at December 31, 2000, after giving pro forma
     effect to the Transactions;

provided that all sales, transfers, leases and other dispositions permitted
under clauses (a) and (d) of this Section (other than those resulting in the
receipt by the Company and the Subsidiaries of consideration with a fair market
value of less than $25,000,000 in the aggregate for any individual  transaction
or series of related transactions) shall be made for fair value.

          SECTION 6.03.  Guarantees. The Company shall not, and shall not permit
any Subsidiary to, Guarantee any obligation of any Person, or suffer to exist
any such Guarantee, except that:

          (a)  the Company may Guarantee any obligation of any Subsidiary;

          (b)  any Subsidiary may Guarantee any obligation of the Company or any
     other Subsidiary; and

          (c)  the Company or any Subsidiary may issue a Guarantee of any
     obligation of a Person other than the Company or any Subsidiary, or assume
     an obligation of any such Person; provided that (i) the excess (if any) of
     (x) the aggregate amount of all obligations referred to in this clause (c)
     (to the extent said obligations do not otherwise constitute Funded Debt)
     over (y) 5% of Consolidated Shareholders' Equity shall be deemed Funded
     Debt for the purposes of this Agreement.

          SECTION 6.04.  Fundamental Changes and Acquisitions.  The Company will
not, nor will it permit any of the Subsidiaries to, enter into any transaction
of merger or consolidation or amalgamation, or liquidate, wind up or dissolve
itself (or suffer any liquidation or dissolution).  The Company will not, nor
will it permit any of the Subsidiaries to, acquire any business from or all or
any significant part of the Property of, or all or any significant part of the
capital stock of, or be a party to any acquisition of, any Person.

          Notwithstanding the foregoing:

          (a)  any Subsidiary may be merged or consolidated with or into:  (i)
     any Borrower if such Borrower shall be the continuing or surviving
     corporation or (ii) any other Subsidiary; provided that if any such
     transaction shall be between a Subsidiary and a Wholly-Owned Subsidiary,
     the Wholly-Owned Subsidiary shall be the continuing or surviving
     corporation;

          (b)  during any Investment Grade Rating Period, any Borrower or any
     Subsidiary may merge or consolidate with any other Person if (i) in the
     case of a merger or consolidation of any Borrower, such Borrower is the
     surviving corporation and, in any other case, the surviving corporation is
     a Wholly-Owned Subsidiary and (ii) after giving effect thereto no Default
     would exist;
<PAGE>

                                                                              47

          (c)  the Borrowers may consummate the Acquisition and the related
     Transactions; and

          (d)  the Company or any of the Subsidiaries may acquire the business
     of, or all or any significant part of the Property of, or all or any
     significant part of the capital stock of, or be a party to any acquisition
     of, any Person engaged in the same line of business as the Company and its
     Subsidiaries, taken as a whole, or a  related line of business (whether
     directly or through the merger of a Wholly-Owned Subsidiary with that
     Person) subject to the following:

               (i)  at the time of such acquisition, and after giving effect
          thereto, no Default shall exist; and

               (ii) if the sum of (A) the aggregate value of the consideration
          to be paid in such acquisition and (B) the aggregate value of the
          consideration paid in all prior acquisitions that shall have been
          completed since the most recent fiscal quarter end of the Company
          shall exceed $150,000,000, the Company shall have delivered a
          certificate of a senior accounting or financial officer of the Company
          to the Co-Administrative Agents prior to such acquisition
          demonstrating compliance with Sections 6.08, 6.09 and 6.10 on a pro
          forma basis as if such acquisition and all such prior acquisitions had
          occurred at the beginning of the most recently ended period of four
          consecutive fiscal quarters of the Company;

     provided that, during any period which is not an Investment Grade Rating
     Period, and notwithstanding the provisions of clause (i) above, the
     consideration for any such acquisition shall consist exclusively of Equity
     of the Company.

          SECTION 6.05.  Limitation on Liens. The Company shall not, and shall
not permit any Subsidiary to, create, assume or suffer to exist any Lien on any
of its Property, whether now owned or hereafter acquired, except:

          (a)  deposits or pledges to secure payments of workers' compensation,
     unemployment insurance, old age pensions or other social security, or in
     connection with or to secure the performance of bids, tenders, contracts
     (other than contracts for the repayment of borrowed money) or leases, or to
     secure statutory obligations or surety or appeal bonds, or other pledges or
     deposits for purposes of like nature in the ordinary and normal operation
     of its business;

          (b)  Liens created in favor of the United States of America or any
     department or agency thereof or any other contracting party or customer in
     connection with advance or progress payments or similar forms of vendor
     financing or incentive arrangements;

          (c)  mechanics', carriers', workers', repairmen's or other like Liens
     arising in the ordinary course of business in respect of obligations which
     are not overdue;
<PAGE>

                                                                              48

          (d)  Liens for taxes which at the particular time are not due, or
     remain payable without penalty, or which are being contested in good faith
     and by proper proceedings;

          (e)  Liens already existing on Property acquired after the date
     hereof, and securing obligations assumed in connection with a transaction
     permitted by Section 6.04 hereof (and not created in anticipation thereof);

          (f)  purchase money Liens on fixed assets (including trust deeds or
     first mortgages) given substantially concurrently with (or within 180 days
     after) the acquisition of the fixed assets and Liens existing on such fixed
     assets at the time of acquisition thereof, conditional sales agreements or
     other title retention agreements with respect to fixed assets hereafter
     acquired, and extensions and renewals of any of the same; provided that (i)
     the Indebtedness secured by any such Lien shall be reasonably related to
     the fair market value of the related asset acquired by the Company or a
     Subsidiary, as the case may be, and (ii) no such Lien shall extend to any
     Property other than that then being acquired; and

          (g)  Liens existing on the Effective Date, as set forth in Schedule
     6.05(g).

provided that the aggregate amount of Indebtedness or obligations (whether or
not assumed by the Company or a Subsidiary) secured by all Liens and agreements
permitted by clauses (e) and (f) of this Section 6.05 shall not at any time
exceed $375,000,000.

          SECTION 6.06.  Investments.  The Company shall not, and shall not
permit any Subsidiary to, make any Investment except:

          (a)  the Acquisition, and other acquisitions expressly permitted by
     Section 6.04;

          (b)  Investments existing on the date hereof in any Person;

          (c)  Permitted Investments;

          (d)  Investments made in the ordinary and normal operation of its
     business as presently conducted;

          (e)  reasonable advances to its subcontractors and suppliers in
     anticipation of deliveries;

          (f)  Investments in any Person or Persons, whether domestic or
     foreign, to the extent covered by Guarantees or insurance covering all
     political and credit risks issued by the Overseas Private Investment
     Corporation or another agency of the United States acceptable to the
     Administrative Agent or by an agency of a foreign government which is rated
     investment grade by Moody's or S&P; and

          (g)  other Investments in any Person or Persons, whether domestic or
     foreign, in amounts which do not exceed in the aggregate at any time
     outstanding 5% of the consolidated total assets of the Company and the
     Subsidiaries as at the last day of the most
<PAGE>

                                                                              49

     recently completed Quarterly Period, so long as the aggregate amount of
     Investments in Person(s) that are not Wholly-Owned Subsidiaries does not as
     at such day exceed 2% of the consolidated total assets of the Company and
     the Subsidiaries.

          SECTION 6.07.  Indebtedness.  (a) The Company will not, nor will it
permit any of its Subsidiaries to, create, incur or suffer to exist any
Indebtedness except:

          (i)    Indebtedness to the Lenders hereunder and under the 364-Day
     Credit Agreement and unsecured Indebtedness replacing in whole or in part
     the facility established by this Agreement or by the 364-Day Credit
     Agreement; provided that (a) the Loans outstanding under this Agreement or
     the 364-Day Credit Agreement will be repaid, and the Commitments under such
     Agreements shall be reduced, by amounts equal to the aggregate net proceeds
     of such replacement Indebtedness at the time of the issuance thereof, (b)
     the weighted average life of maturity of such replacement Indebtedness
     shall not be less than that of the Indebtedness under this Agreement or the
     364-Day Credit Agreement, as the case may be, and (c) the obligors in
     respect of any such replacement Indebtedness shall be limited to the
     Borrowers;

          (ii)   the Senior Securities and the Guarantees thereof by the Company
     and Litton Operating;

          (iii)  Indebtedness outstanding on the date hereof and reflected in
     Schedule 6.07, and refinancings and extensions of any thereof that do not
     increase the outstanding principal amount of such Indebtedness;

          (iv)   Subordinated Indebtedness;

          (v)    Indebtedness of (x) Subsidiaries to the Company to the extent
     the Company is permitted by Section 6.06 to make Investments in
     Subsidiaries, (y) Subsidiaries to other Subsidiaries or (z) the Company to
     Subsidiaries;

          (vi)   Guarantees permitted by Section 6.03;

          (vii)  Indebtedness under Working Capital Credit Lines, provided that
     the Working Capital Credit Lines of Subsidiaries other than Northrop
     Operating and Litton Operating shall be in an aggregate principal amount
     not greater than $300,000,000;

          (viii) Indebtedness in respect of letters of credit, banker's
     acceptances and similar instruments issued or accepted for the account of
     the Company or any Subsidiary in the ordinary course of its business;

          (ix)   Indebtedness issued under the Northrop Operating Senior
     Indenture or the Litton Operating Senior Indenture and outstanding on the
     date hereof;

          (x)    Indebtedness issued under the Northrop Operating Senior
     Indenture or the Litton Operating Senior Indenture after the date hereof;
     provided that at the time of and
<PAGE>

                                                                              50

     immediately after giving effect to such issuance (A) the Leverage Ratio at
     the then most recent Fiscal Date, determined on a pro forma basis to give
     effect to such issuance as if it had occurred on such Fiscal Date, shall
     not exceed 50%, (B) the Senior Long Term Debt shall be rated at least BBB-
     by S&P and at least Baa3 by Moody's and (C) no Default shall have occurred
     and be continuing;

          (xi)   Indebtedness under Interest Rate Protection Agreements
     permitted or required by Section 6.13;

          (xii)  Indebtedness under the Existing Credit Agreements and the
     Refinanced Debt, but only until the Effective Date; and

          (xiii) additional Indebtedness of the Company and the Subsidiaries
     (including Capital Lease Obligations and other Indebtedness secured by
     Liens permitted under clauses (e) and (f) of Section 6.05 hereof) up to but
     not exceeding $375,000,000 in the aggregate at any one time outstanding.

          (b)    The Borrowers will not permit the Indebtedness of all of the
Subsidiaries that are not Borrowers (other than Indebtedness owing to the
Company or another Subsidiary) to exceed $425,000,000 in the aggregate at any
one time outstanding.

          SECTION 6.08.  Leverage Ratio.  The Company will not permit the
Leverage Ratio as of any Fiscal Date set forth below to exceed the percentage
set forth below opposite such Fiscal Date:

              Fiscal Date                     Percentage
              -----------                     ----------

  June 30, 2001                                 60.0%

  September 30, 2001                            60.0%

  December 31, 2001 - September 30, 2002        57.5%

  December 31, 2002 - September 30, 2003        55.0%

  December 31, 2003 - September 30, 2004        52.5%

  December 31, 2004 and each Fiscal Date        50.0%
  thereafter

SECTION 6.09.  Funded Debt to Consolidated EBITDA Ratio.  The Company will not
permit the Funded Debt to Consolidated EBITDA Ratio as of any Fiscal Date set
forth below to exceed the ratio set forth below opposite such Fiscal Date:

              Fiscal Date                 Ratio
              -----------                 -----

June 30, 2001                             4.75x
--------------------------------------------------------------------------------
<PAGE>

                                                                              51

              Fiscal Date                   Ratio
              -----------                   -----

  September 30, 2001                        4.75x

  December 31, 2001 - September 30, 2002    4.25x

  December 31, 2002 - September 30, 2003    4.00x

  December 31, 2003 - September 30, 2004    3.50x

  December 31, 2004 and each Fiscal Date    3.00x

          SECTION 6.10.  Fixed Charge Coverage Ratio.  The Company will not
permit the Fixed Charge Coverage Ratio as of any Fiscal Date set forth below to
be less than the ratio set forth below opposite such Fiscal Date:

              Fiscal Date                   Ratio
              -----------                   -----

  June 30, 2001                             1.25x

  September 30, 2001                        1.25x

  December 31, 2001 - September 30, 2002    1.25x

  December 31, 2002 - September 30, 2003    1.75x

  December 31, 2003 - September 30, 2004    2.00x

  December 31, 2004 and each Fiscal Date    2.25x

          SECTION 6.11.  Use of Proceeds. The proceeds of the Loans hereunder
will be used (a) to pay the cash consideration payable in the Exchange Offer and
the Litton Merger, (b) to refinance the Existing Credit Agreements and
Refinanced Debt, (c) to pay related fees and expenses and (d) for working
capital, to finance capital expenditures and permitted acquisitions and for
other general corporate purposes.  All borrowings will be in compliance with all
applicable legal and regulatory requirements, including Regulations U and X.

          SECTION 6.12.  Margin Stock.  The Company shall not permit more than
25% of the value (as determined by any reasonable method) of the Property of the
Company and the Subsidiaries subject to the restrictions of Section 6.02, 6.04
or 6.05 hereof (or any similar restriction) to be represented by margin stock
(within the meaning of Regulation U or X).

          SECTION 6.13.  Interest Rate Protection Agreements. (a)  The Company
will not permit any of its Subsidiaries to enter into or become obligated in
respect of any Interest Rate Protection Agreement, other than, in the case of
any Subsidiary, any Interest Rate Protection Agreement entered into with respect
to Indebtedness of such Subsidiary permitted under Section 6.07.
<PAGE>

                                                                              52

          (b)  Not later than 120 days after the Effective Date, the Company
shall cause, and thereafter maintain, through a combination of Interest Rate
Protection Agreements and fixed rate Funded Debt, the effective fixed rate
component of its Funded Debt to be approximately equal to or greater than 50%.

          SECTION 6.14.  Modifications of Certain Documents. The Company will
not consent to any modification, supplement or waiver of any of the provisions
of the Northrop Operating Senior Indenture the Northrop Operating Subordinated
Indenture or the Litton Operating Senior Indenture or any agreement, instrument
or other document evidencing or relating to Subordinated Indebtedness, in each
case to the extent that the same would adversely affect in any material respect
the rights or interests of the Agents and the Lenders, without the prior written
consent of the Co-Administrative Agents.

          SECTION 6.15.  Subsidiary Equity Issuance. The Company shall not
permit any Subsidiary to issue Equity to any Person other than the Company or a
Wholly-Owned Subsidiary except (a) directors' qualifying shares and (b) in
connection with the establishment or capitalization of a bona fide joint venture
with the Person or Persons to whom such Equity is issued.

                                  ARTICLE VII

                               Events of Default

          If one or more of the following events (herein called "Events of
Default") shall occur and be continuing:

          (a)  the Borrowers shall default in the payment of any principal of
     any Loan when due; or the Borrowers shall default in the payment of any
     interest on any Loan or any other amount payable by them hereunder to any
     Lender or any  Agent when due which nonpayment shall have continued for a
     period of two Business Days or more; or

          (b)  (i) default by the Company or any Subsidiary in the payment of
     any Indebtedness of the Company or any Subsidiary after any applicable
     period of grace, (ii) any event specified in any note, agreement, indenture
     or other document evidencing or relating to any of the Company or any
     Subsidiary Indebtedness shall occur if the effect of such event is to
     cause, or (with the giving of any notice or the lapse of time or both) to
     permit the holder or holders of such Indebtedness (or a trustee or agent on
     behalf of such holder or holders) to cause, such Indebtedness to become due
     prior to its stated maturity or (iii) any event specified in any Interest
     Rate Protection Agreement of the Company or any Subsidiary shall occur if
     the effect of such event is to cause, or (with the giving of any notice or
     the lapse of time or both) to permit, any termination or liquidation
     payment or payments to become due thereunder; except for a default in
     respect of Indebtedness, (in the case of clauses (i) or (ii) of this
     paragraph), or payments (in the case of clause (iii) of this paragraph) not
     exceeding $50,000,000 in aggregate amount; or
<PAGE>

                                                                              53

          (c)  any representation, warranty or certification made or deemed made
     in any of the Loan Documents by the Borrowers or any certificate furnished
     to any Lender or Agent pursuant to the provisions hereof shall prove to
     have been false or misleading as of the time made or deemed made or
     furnished in any material respect; or

          (d)  any of the Borrowers shall default in the performance of any of
     its obligations under Section 5.01(h), Section 10.14 or Article VI hereof
     (other than Section 6.15); any of the Borrowers shall default in the
     performance of any of its other obligations in this Agreement and such
     default shall continue unremedied for a period of 30 days after notice
     thereof to the Borrowers by the Co-Administrative Agents or any Lender
     (through the Co-Administrative Agents); or

          (e)  any Borrower or any Subsidiary having total assets of
     $100,000,000 or more shall admit in writing its inability to, or be
     generally unable to, pay its debts as such debts become due; or

          (f)  any Borrower or any Subsidiary having total assets of
     $100,000,000 or more shall (i) apply for or consent to the appointment of,
     or the taking of possession by, a receiver, custodian, trustee or
     liquidator of itself or of all or a substantial part of its property, (ii)
     make a general assignment for the benefit of its creditors, (iii) commence
     a voluntary case under any law relating to bankruptcy, insolvency,
     reorganization (as now or hereafter in effect), (iv) file a petition
     seeking to take advantage of any other law relating to bankruptcy,
     insolvency, reorganization, winding-up, or composition or readjustment of
     debts, (v) fail to controvert in a timely and appropriate manner, or
     acquiesce in writing to, any petition filed against it in an involuntary
     case under any law relating to bankruptcy, insolvency, reorganization, or
     (vi) take any corporate action for the purpose of effecting any of the
     foregoing; or

          (g)  a proceeding or case shall be commenced, without the application
     or consent of any Borrower or any Subsidiary having total assets of
     $100,000,000 or more, in any court of competent jurisdiction, seeking (i)
     its liquidation, reorganization, dissolution or winding-up, or the
     composition or readjustment of its debts, (ii) the appointment of a
     trustee, receiver, custodian, liquidator or the like of such Borrower or
     such Subsidiary or of all or any substantial part of its assets, or (iii)
     similar relief in respect of such Borrower or such Subsidiary under any law
     relating to bankruptcy, insolvency, reorganization, winding-up, or
     composition or adjustment of debts, and such proceeding or case shall
     continue undismissed, or an order, judgment or decree approving or ordering
     any of the foregoing shall be entered and continue unstayed and in effect,
     for a period of 60 days; or an order for relief against such Borrower or
     such Subsidiary shall be entered in an involuntary case under any law
     relating to bankruptcy, insolvency, reorganization; or

          (h)  if (i) a final judgment which, with other outstanding final
     judgments against the Company and all Subsidiaries, exceeds an aggregate of
     $100,000,000, excluding (A) any amounts covered by insurance as to which
     the insurance company shall have acknowledged coverage and (B) the amount
     of any judgment against a Subsidiary other than a Borrower that exceeds the
     fair market value of the assets of such Subsidiary (but
<PAGE>

                                                                              54

     only if neither the Company nor any other Subsidiary is directly or
     contingently liable therefor), shall be rendered against the Company or any
     Subsidiary and (ii) within 60 days after entry thereof, such judgment shall
     not have been discharged, vacated or reversed or execution thereof stayed
     pending appeal or within 60 days after the expiration of any such stay,
     such judgment shall not have been discharged, vacated or reversed; or

          (i)  an event or condition (i) which might constitute grounds under
     Section 4042 of ERISA for the termination of, or for the appointment of a
     trustee to administer, any Plan or Multiemployer Plan and which involves a
     liability of the Company or any Subsidiary having total assets of
     $100,000,000 or more to PBGC in excess of $100,000,000 or (ii) leading to
     the receipt by the Company or any Subsidiary having total assets of
     $100,000,000 or more from the PBGC of a notice of its intention to
     terminate any Plan or Multiemployer Plan or to have a trustee appointed to
     administer any such Plan or Multiemployer Plan shall occur or exist and, as
     a result of such event or condition, together with all other such events or
     conditions, the Company or any ERISA Affiliate shall incur or in the
     opinion of the Required Lenders shall be reasonably likely to incur a
     liability to a Plan, a Multiemployer Plan or PBGC (or any combination of
     the foregoing) which is, in the determination of the Required Lenders,
     material in relation to the consolidated financial position of the Company
     and the Subsidiaries; or

          (j)  (i) any person or group of persons (within the meaning of Section
     13 or 14 of the Exchange Act, it being agreed that an employee of the
     Company or any Subsidiary for whom shares are held under an employee stock
     ownership, employee retirement, employee savings or similar plan and whose
     shares are voted in accordance with the instructions of such employee shall
     not be a member of a group of persons within the meaning of said Section 13
     or 14 solely because such employee's shares are held by a trustee under
     said plan) shall acquire, directly or indirectly, beneficial ownership
     (within the meaning of Rule 13d-3 promulgated by the SEC under said Act, as
     amended) of more than 50% of the outstanding shares of stock of the Company
     having by the terms thereof ordinary voting power to elect (whether
     immediately or ultimately) a majority of the board of directors of the
     Company (irrespective of whether or not at the time stock of any other
     class or classes of stock of the Company shall have or might have voting
     power by reason of the happening of any contingency) or (ii) the Company
     shall cease to own, directly or indirectly, beneficially and of record,
     shares representing 100% of the issued and outstanding capital stock of (x)
     Northrop Operating or (y) after the Litton Merger, Litton Operating; or

          (k)  at any time during any period of 25 consecutive calendar months
     following the date hereof, a majority of the Board of Directors of the
     Company shall not be composed of individuals (i) who were members of the
     Board of the Company or the Board of Northrop Operating (in each case after
     giving effect to the consummation of the Exchange Offer) on the first day
     of such period, (ii) whose election or nomination to said Board was
     approved by individuals referred to in clause (i) above constituting at the
     time of such election or nomination at least a majority of said Board or
     (iii) whose election or nomination to said Board was approved by
     individuals referred to in clauses (i) and (ii) above constituting at the
     time of such election or nomination at least a majority of said Board; or
<PAGE>

                                                                              55

          (l)  the joint liability of any Borrower for any of the Obligations
     shall cease to be, or shall be asserted by any Borrower not to be, valid
     and enforceable;

          Thereupon, (i) in the case of an Event of Default other than one
referred to in clause (f) or (g) of this Article VII, (x) the Co-Administrative
Agents, upon request of the Required Lenders, shall, by notice to the Borrowers,
(x) cancel the Commitments and/or (y) declare the principal amount then
outstanding of and the accrued interest on the Loans and all other amounts
payable by the Borrowers hereunder to be forthwith due and payable, whereupon
such amounts shall be immediately due and payable without presentment, demand,
protest or other formalities of any kind, all of which are hereby expressly
waived by the Borrowers; and (ii) in the case of the occurrence of an Event of
Default referred to in clause (f) or (g) of this Article VII, the Commitments
shall be automatically canceled and the principal amount then outstanding of,
and the accrued interest on, the Loans and all other amounts payable by the
Borrowers hereunder shall become automatically immediately due and payable
without presentment, demand, protest or other formalities of any kind, all of
which are hereby expressly waived by the Borrowers.

          Without limiting Section 10.02, the Required Lenders may, on behalf of
all the Lenders, waive, for the period and on the conditions (if any) specified
in such waiver, any Event of Default arising from the failure by any Borrower to
perform any of its obligations under Articles V and VI hereof and any
consequences thereof (including any termination of the Commitments and/or any
declaration that the principal of and interest on the Loans and all other
amounts payable by the Borrowers hereunder shall be forthwith due and payable).
In the case of any such waiver, the Borrowers, the Lenders and the Co-
Administrative Agents, for said period and on said conditions, shall be restored
to their respective former positions and rights hereunder, and any Event of
Default so waived shall, for said period and on said conditions, be deemed not
to be continuing for the purposes of this Agreement; provided that no such
waiver shall extend to any subsequent or other Event of Default or impair any
other right of any Lender or Agent hereunder.

                                 ARTICLE VIII

                                  The Agents

          In order to expedite the transactions contemplated by this Agreement,
Chase and CSFB are hereby appointed to act as Co-Administrative Agents and Chase
is hereby appointed to act as Payment Agent.  Each of the Lenders hereby
irrevocably authorizes the Co-Administrative Agents and the Payment Agent to
take such actions on its behalf and to exercise such powers as are delegated to
the Co-Administrative Agents and the Payment Agent by the terms of the Loan
Documents, together with such actions and powers as are reasonably incidental
thereto.

          Any bank serving as Co-Administrative Agent or Payment Agent hereunder
shall have the same rights and powers in its capacity as a Lender as any other
Lender and may exercise the same as though it were not such Co-Administrative
Agent or Payment Agent, and such bank and its Affiliates may accept deposits
from, lend money to and generally engage in any kind of business with the
Borrowers, any Subsidiary or other Affiliate thereof as if it were not such Co-
Administrative Agent or Payment Agent hereunder.
<PAGE>

                                                                              56

          The Co-Administrative Agents and the Payment Agent shall not have any
duties or obligations except those expressly set forth in the Loan Documents.
Without limiting the generality of the foregoing, (a) no Co-Administrative Agent
or Payment Agent shall be subject to any fiduciary or other implied duties,
regardless of whether a Default has occurred and is continuing, (b) no Co-
Administrative Agent or Payment Agent shall have any duty to take any
discretionary action or exercise any discretionary powers, except discretionary
rights and powers expressly contemplated by the Loan Documents that such Co-
Administrative Agent or Payment Agent is required to exercise in writing by the
Required Lenders (or such other number or percentage of the Lenders as shall be
necessary under the circumstances as provided in Section 10.02), and (c) except
as expressly set forth in the Loan Documents, no Co-Administrative Agent or
Payment Agent shall have any duty to disclose, and shall not be liable for the
failure to disclose, any information relating to the Company or any Subsidiary
that is communicated to or obtained by the bank serving as Co-Administrative
Agent or Payment Agent or any of its Affiliates in any capacity.  No Co-
Administrative Agent or Payment Agent shall be liable for any action taken or
not taken by it with the consent or at the request of the Required Lenders (or
such other number or percentage of the Lenders as shall be necessary under the
circumstances as provided in Section 10.02) or in the absence of its own gross
negligence or wilful misconduct.  No Co-Administrative Agent or Payment Agent
shall be deemed to have knowledge of any Default unless and until written notice
thereof is given to such Co-Administrative Agent or Payment Agent by the
Borrowers or a Lender, and no such Co-Administrative Agent or Payment Agent
shall be responsible for or have any duty to ascertain or inquire into (i) any
statement, warranty or representation made in or in connection with any Loan
Document, (ii) the contents of any certificate, report or other document
delivered hereunder or in connection herewith, (iii) the performance or
observance of any of the covenants, agreements or other terms or conditions set
forth in any Loan Document, (iv) the validity, enforceability, effectiveness or
genuineness of any Loan Document or any other agreement, instrument or document,
or (v) the satisfaction of any condition set forth in Article IV or elsewhere in
any Loan Document, other than to confirm receipt of items expressly required to
be delivered to such Co-Administrative Agent or Payment Agent.

          Each Co-Administrative Agent or Payment Agent shall be entitled to
rely upon, and shall not incur any liability for relying upon, any notice,
request, certificate, consent, statement, instrument, document or other writing
believed by it to be genuine and to have been signed or sent by the proper
Person.  Each Co-Administrative Agent or Payment Agent also may rely upon any
statement made to it orally or by telephone and believed by it to be made by the
proper Person, and shall not incur any liability for relying thereon.  Each Co-
Administrative Agent or Payment Agent may consult with legal counsel (who may be
counsel for the Borrowers), independent accountants and other experts selected
by it, and shall not be liable for any action taken or not taken by it in
accordance with the advice of any such counsel, accountants or experts.

          Each Co-Administrative Agent or Payment Agent may perform any and all
its duties and exercise its rights and powers by or through any one or more sub-
agents appointed by such Co-Administrative Agent or Payment Agent.  Each Co-
Administrative Agent or Payment Agent and any such sub-agent may perform any and
all its duties and exercise its rights and powers through their respective
Related Parties.  The exculpatory provisions of the preceding paragraphs and the
provisions of Section 10.03 shall apply to any such sub-agent and to the Related
Parties of the Co-Administrative Agents or Payment Agent and any such sub-agent,
and shall apply to their
<PAGE>

                                                                              57

respective activities in connection with the syndication of the credit
facilities provided for herein as well as activities as Co-Administrative Agent
or Payment Agent.

          Subject to the appointment and acceptance of a successor Co-
Administrative Agent or Payment Agent as provided in this paragraph, any Co-
Administrative Agent or the Payment Agent may resign at any time by notifying
the Lenders and the Company.  Upon any such resignation, the Required Lenders
shall have the right (in consultation with, and with the consent of (unless an
Event of Default has occurred and is continuing pursuant to clause (f) or (g) of
Article VII) the Company, which shall not be unreasonably withheld) to appoint a
successor. If no successor shall have been so appointed by the Required Lenders
and shall have accepted such appointment within 30 days after the retiring Co-
Administrative Agent or Payment Agent gives notice of its resignation, then the
retiring Co-Administrative Agent or Payment Agent may (in consultation with, and
with the consent of (unless an Event of Default has occurred and is continuing
pursuant to clause (f) or (g) of Article VII), the Company, which shall not
unreasonably withhold such consent and which shall, if the retiring Co-
Administrative Agent or Payment Agent shall so request, designate and approve a
successor Co-Administrative Agent or Payment Agent) on behalf of the Lenders,
appoint a successor Co-Administrative Agent or Payment Agent which shall be a
bank with an office in New York, New York, or an Affiliate of any such bank.
Upon the acceptance of its appointment as Co-Administrative Agent or Payment
Agent hereunder by a successor, such successor shall succeed to and become
vested with all the rights, powers, privileges and duties of the retiring Co-
Administrative Agent or Payment Agent, and the retiring Co-Administrative Agent
or Payment Agent shall be discharged from its duties and obligations hereunder.
The fees payable by the Borrowers to a successor Co-Administrative Agent or the
Payment Agent shall be the same as those payable to its predecessor unless
otherwise agreed among the Borrowers and such successor.  After a Co-
Administrative Agent's or the Payment Agent's resignation hereunder, the
provisions of this Article and Section 10.03 shall continue in effect for the
benefit of such retiring Co-Administrative Agent or Payment Agent, its sub-
agents and their respective Related Parties in respect of any actions taken or
omitted to be taken by any of them while it was acting as Co-Administrative
Agent or Payment Agent.

          Each Lender acknowledges that it has, independently and without
reliance upon the Co-Administrative Agents or the Payment Agent or any other
Lender and based on such documents and information as it has deemed appropriate,
made its own credit analysis and decision to enter into this Agreement.  Each
Lender also acknowledges that it will, independently and without reliance upon
the Co-Administrative Agents or the Payment Agent or any other Lender and based
on such documents and information as it shall from time to time deem
appropriate, continue to make its own decisions in taking or not taking action
under or based upon this Agreement, any other Loan Document, any related
agreement or any document furnished hereunder or thereunder.

          None of the institutions named as Syndication Agent or Co-
Documentation Agents in the heading of this Agreement shall, in their capacities
as such, have any duties or responsibilities of any kind under this Agreement.
<PAGE>

                                                                              58

                                  ARTICLE IX

                    Joint and Several Liability of Borrowers

          In order to induce the Lenders to extend credit hereunder, each
Borrower agrees that it will be jointly and severally liable for all the
Obligations, including the principal of and interest on all Loans requested by
and made to either of the other Borrowers.  Each Borrower further agrees that
the due and punctual payment of the Obligations may be extended or renewed, in
whole or in part, without notice to or further assent from it, and that it will
remain bound hereunder notwithstanding any such extension or renewal of any
Obligation.

          Each Borrower waives presentment to, demand of payment from and
protest to any other Borrower of any of the Obligations, and also waives notice
of acceptance of its obligations and notice of protest for nonpayment. The
obligations of the Borrowers hereunder shall not be affected by (a) the failure
of any Lender or Agent to assert any claim or demand or to enforce or exercise
any right or remedy against any other Borrower under the provisions of this
Agreement or otherwise or (b) any rescission, waiver, amendment or modification
of any of the terms or provisions of this Agreement or any other agreement.

          Each Borrower further agrees that its agreement under this Article IX
constitutes a promise of payment when due (whether or not any bankruptcy or
similar proceeding shall have stayed the accrual or collection of any of the
Obligations or operated as a discharge thereof) and not merely of collection,
and waives any right to require that any resort be had by any Lender to any
balance of any deposit account or credit on the books of any Lender in favor of
any Borrower or any other Person.

          The obligations of each Borrower under this Article IX shall not be
subject to any reduction, limitation, impairment or termination for any reason,
and shall not be subject to any defense or setoff, counterclaim, recoupment or
termination whatsoever, by reason of the invalidity, illegality or
unenforceability of the Obligations, any impossibility in the performance of the
Obligations or otherwise. Without limiting the generality of the foregoing, the
obligations of the Borrowers under this Article IX shall not be discharged or
impaired or otherwise affected by the failure of any Agent or any Lender to
assert any claim or demand or to enforce any remedy under this Agreement or any
other agreement, by any waiver or modification in respect of any thereof, by any
default, failure or delay, willful or otherwise, in the performance of any of
the Obligations, or by any other act or omission which may or might in any
manner or to any extent vary the risk of such Borrower or otherwise operate as a
discharge of such Borrower or any Borrower as a matter of law or equity.

          Each Borrower further agrees that its obligations under this Article
IX shall continue to be effective or be reinstated, as the case may be, if at
any time payment, or any part thereof, of any Obligation is rescinded or must
otherwise be restored by the any Agent or any Lender upon the bankruptcy or
reorganization of any other Borrower or otherwise.

          In furtherance of the foregoing and not in limitation of any other
right which any Agent or any Lender may have at law or in equity against any
Borrower by virtue of this
<PAGE>

                                                                              59

Article IX, upon the failure of any other Borrower to pay any Obligation when
and as the same shall become due, whether at maturity, by acceleration, after
notice of prepayment or otherwise, each Borrower hereby promises to and will,
upon receipt of written demand by any Agent, forthwith pay, or cause to be paid,
in cash the amount of such unpaid Obligation.

          If by virtue of the provisions set forth herein, either Northrop
Operating or Litton Operating is required to repay and shall repay Loans the
proceeds of which were received by the other, the Borrower that received such
proceeds agrees to reimburse the Borrower that shall have repaid such Loans.
Upon payment by any Borrower of any sums as provided above, all rights of such
Borrower against any Borrower arising as a result thereof by way of right of
subrogation or otherwise shall in all respects be subordinated and junior in
right of payment to the prior indefeasible payment in full of all the
Obligations owed by the Borrowers to the Lenders.

                                   ARTICLE X

                                 Miscellaneous

          SECTION 10.01.  Notices.  Except in the case of notices and other
communications expressly permitted to be given by telephone, all notices and
other communications provided for herein shall be in writing and shall be
delivered by hand or overnight courier service, mailed by certified or
registered mail or sent by telecopy, as follows:

          (a)  if to any of the Borrowers, to it at 1840 Century Park East, Los
     Angeles, CA 90067-2199, Attention of Albert F. Myers, Corporate Vice
     President and Treasurer and David H. Strode, Assistant Treasurer (both at
     Telecopy No. (310) 201-3088);

          (b)  if to the Agents:

               (1)  to The Chase Manhattan Bank, Loan and Agency Services Group,
          One Chase Manhattan Plaza, 8th Floor, New York, New York 10081,
          Attention of Richard Smith (Telecopy No. (212) 270-5150), with a copy
          to The Chase Manhattan Bank, 270 Park Avenue, New York, NY 10017,
          Attention of Doris Mesa (Telecopy No. (212) 552-5650); and

               (2)  to Credit Suisse First Boston, 11 Madison Avenue, New York,
          NY 10010, Attention of [    ] Telecopy No. [    ]); and

          (c)  if to any other Lender, to it at its address (or telecopy number)
     set forth in its Administrative Questionnaire.

Any party hereto may change its address or telecopy number for notices and other
communications hereunder by notice to the other parties hereto.  All notices and
other communications given to any party hereto in accordance with the provisions
of this Agreement shall be deemed to have been given on the date of receipt.
<PAGE>

                                                                              60

          SECTION 10.02.  Waivers; Amendments.  (a)  No failure or delay by any
Agent or any Lender in exercising any right or power hereunder or under any
other Loan Document shall operate as a waiver thereof, nor shall any single or
partial exercise of any such right or power, or any abandonment or
discontinuance of steps to enforce such a right or power, preclude any other or
further exercise thereof or the exercise of any other right or power.  The
rights and remedies of the Agents and the Lenders hereunder and under any other
Loan Documents are cumulative and are not exclusive of any rights or remedies
that they would otherwise have.  No waiver of any provision of any Loan Document
or consent to any departure by the Borrowers therefrom shall in any event be
effective unless the same shall be permitted by paragraph (b) of this Section,
and then such waiver or consent shall be effective only in the specific instance
and for the purpose for which given.  Without limiting the generality of the
foregoing, the making of a Loan shall not be construed as a waiver of any
Default, regardless of whether any Agent or any Lender may have had notice or
knowledge of such Default at the time.

          (b)  Neither this Agreement nor any other Loan Document nor any
provision hereof or thereof may be waived, amended or modified except pursuant
to an agreement or agreements in writing entered into by the Borrowers party
thereto and the Required Lenders or by the Borrowers party thereto and the Co-
Administrative Agents with the consent of the Required Lenders; provided that no
such agreement shall (i) increase the Commitment of any Lender without the
written consent of such Lender, (ii) reduce the principal amount of any Loan or
reduce the rate of interest thereon, or reduce any fees payable to any Lender
hereunder, without the written consent of each Lender affected thereby, (iii)
postpone the scheduled date of payment of the principal amount of any Loan or
any interest thereon, or any fees payable hereunder, or reduce the amount of,
waive or excuse any such payment, or postpone the scheduled date of expiration
of any Commitment, without the written consent of each Lender affected thereby,
(iv) change Section 2.15 in a manner that would alter the pro rata sharing of
payments required thereby, without the written consent of each Lender affected
thereby, (v) change any of the provisions of this Section or the definition of
"Required Lenders" or any other provision of any Loan Document specifying the
number or percentage of Lenders required to waive, amend or modify any rights
hereunder or make any determination or grant any consent hereunder or (vi)
release any Borrower from its joint and several liability for the Obligations
hereunder, or limit its liability in respect of such joint and several
liability, without the written consent of each Lender; provided further that no
such agreement shall amend, modify or otherwise affect the rights or duties of
any Agent hereunder without the prior written consent of such Agent.

          SECTION 10.03.  Expenses; Indemnity; Damage Waiver.  (a)  The
Borrowers shall pay (i) all reasonable out-of-pocket expenses incurred by the
Agents and their Affiliates named on the cover of this Agreement, including the
reasonable fees, charges and disbursements of one outside counsel for the
Agents, in connection with the syndication, prior to the date hereof, of the
credit facilities provided for herein, the preparation and administration of the
Loan Documents or any amendments, modifications or waivers (requested by or for
the benefit of the Borrowers) of the provisions hereof (whether or not the
transactions contemplated hereby or thereby shall be consummated) and (ii) all
reasonable out-of-pocket expenses incurred by any Agent or any Lender, including
the fees, charges and disbursements of any counsel for any Agent or any Lender,
(A) related to the enforcement of its rights in connection with the Loan
Documents (including its rights
<PAGE>

                                                                              61

under this Section) or (B) incurred during any workout, restructuring or related
negotiations in respect of the Loan Documents or the Loans.

          (b)  The Borrowers shall indemnify each Agent, each Lender, each of
their Affiliates and each officer, director, employee or agent of the foregoing
Persons involved directly or indirectly in the Transactions (each such Person
being called an "Indemnitee") against, and hold each Indemnitee harmless from,
any and all losses, claims, damages, liabilities and reasonable related expenses
(other than Excluded Taxes), including the reasonable fees, charges and
disbursements of any counsel for any Indemnitee, incurred by or asserted against
any Indemnitee arising out of, in connection with, or as a result of (i) the
execution or delivery of any Loan Document or any agreement or instrument
contemplated thereby, the performance by the parties to the Loan Documents of
their respective obligations thereunder or the consummation of the Transactions
or any other transactions contemplated hereby, (ii) any Loan or the use of the
proceeds therefrom or (iii) any actual or prospective claim, litigation,
investigation or proceeding relating to any of the foregoing, whether based on
contract, tort or any other theory and regardless of whether any Indemnitee is a
party thereto, except, as to each Indemnitee, for losses, claims, damages,
liabilities and related expenses determined by a court of competent jurisdiction
to have resulted from the gross negligence or wilful misconduct of such
Indemnitee.

          (c)  To the extent that the Borrowers fail to pay any amount required
to be paid by them to any Agent under paragraph (a) or (b) of this Section each
Lender severally agrees to pay to such Agent such Lender's Applicable Percentage
(determined as of the time that the applicable unreimbursed expense or indemnity
payment is sought) of such unpaid amount; provided that the unreimbursed expense
or indemnified loss, claim, damage, liability or related expense, as the case
may be, was incurred by or asserted against such Agent in its capacity as such.

          (d)  To the extent permitted by applicable law, the Borrowers shall
not assert, and hereby waive, any claim against any Indemnitee, on any theory of
liability, for special, indirect, consequential or punitive damages (as opposed
to direct or actual damages) arising out of, in connection with, or as a result
of, this Agreement or any agreement or instrument contemplated hereby, the
Transactions, any Loan or the use of the proceeds thereof.

          (e)  All amounts due under this Section shall be payable promptly
after written demand therefor setting forth the amount and the nature of the
expense or claim, as applicable.

          SECTION 10.04.  Successors and Assigns.  (a)  The provisions of this
Agreement shall be binding upon and inure to the benefit of the parties hereto
and their respective successors and assigns permitted hereby, except that none
of the Borrowers may assign or otherwise transfer any of its rights or
obligations hereunder without the prior written consent of each Lender (and any
attempted assignment or transfer by any of the Borrowers without such consent
shall be null and void).  Nothing in this Agreement, expressed or implied, shall
be construed to confer upon any Person (other than the parties hereto, their
respective successors and assigns permitted hereby and, to the extent expressly
contemplated hereby, the Related Parties of each of the Agents and the Lenders)
any legal or equitable right, remedy or claim under or by reason of this
Agreement.
<PAGE>

                                                                              62

          (b)  Any Lender may assign to one or more assignees all or a portion
of its rights and obligations under this Agreement (including all or a portion
of its Commitment and the Loans at the time owing to it); provided that (i)
except in the case of an assignment to a Lender or an Affiliate of a Lender, the
Company and the Payment Agent must give their prior written consent to such
assignment (which consent shall not be unreasonably withheld), (ii) except in
the case of an assignment to a Lender or an Affiliate of a Lender or an
assignment of the entire remaining amount of the assigning Lender's Commitment,
the amount of the Commitment of the assigning Lender subject to each such
assignment (determined as of the date of the Assignment and Acceptance with
respect to such assignment is delivered to the Payment Agent) shall not be less
than $10,000,000 unless the Company and the Payment Agent otherwise consent,
(iii) each partial assignment shall be made as an assignment of a proportionate
part of all the assigning Lender's rights and obligations under this Agreement,
except that this clause (iii) shall not apply to its rights in respect of
outstanding Competitive Loans, (iv) the parties to each assignment shall execute
and deliver to the Co-Administrative Agents an Assignment and Acceptance,
together with (except in the case of an assignment by or to a Co-Administrative
Agent) a processing and recordation fee of $3,500, and (v) the assignee, if it
shall not be a Lender, shall deliver to the Payment Agent an Administrative
Questionnaire; and provided further that any consent of the Company otherwise
required under this paragraph shall not be required if an Event of Default under
clause (f) or (g) of Article VII has occurred and is continuing.  Subject to
acceptance and recording thereof pursuant to paragraph (d) of this Section, from
and after the effective date specified in each Assignment and Acceptance the
assignee thereunder shall be a party hereto and, to the extent of the interest
assigned by such Assignment and Acceptance, have the rights and obligations of a
Lender under this Agreement, and the assigning Lender thereunder shall, to the
extent of the interest assigned by such Assignment and Acceptance, be released
from its obliga  tions under this Agreement (and, in the case of an Assignment
and Acceptance covering all of the assigning Lender's rights and obligations
under this Agreement, such Lender shall cease to be a party hereto but shall
continue to be entitled to the benefits of Sections 2.13 and 2.14, 2.15 and
10.03.  Any assignment or transfer by a Lender of rights or obligations under
this Agreement that does not comply with this paragraph shall be treated for
purposes of this Agreement as a sale by such Lender of a participation in such
rights and obligations in accordance with paragraph (e) of this Section.

          (c)  The Payment Agent, acting for this purpose as agent of the
Borrowers, shall maintain at one of its offices in The City of New York a copy
of each Assignment and Acceptance delivered to it and a register for the
recordation of the names and addresses of the Lenders, and the Commitment of,
and principal amount of the Loans owing to, each Lender pursuant to the terms
hereof from time to time (the "Register").  The entries in the Register shall be
conclusive, and the Borrowers, the Co-Administrative Agents and the Lenders may
treat each Person whose name is recorded in the Register pursuant to the terms
hereof as a Lender hereunder for all purposes of this Agreement, notwithstanding
notice to the contrary.  The Register shall be available for inspection by the
Borrowers and any Lender, at any reasonable time and from time to time upon
reasonable prior notice.

          (d)  Upon its receipt of a duly completed Assignment and Acceptance
executed by an assigning Lender and an assignee, the assignee's completed
Administrative Questionnaire (unless the assignee shall already be a Lender
hereunder), the processing and recordation fee referred to in paragraph (b) of
this Section and any written consent to such assignment required by
<PAGE>

                                                                              63

paragraph (b) of this Section, the Payment Agent shall accept such Assignment
and Acceptance and record the information contained therein in the Register. No
assignment shall be effective for purposes of this Agreement unless it has been
recorded in the Register as provided in this paragraph.

          (e)  Any Lender may, without the consent of the Borrowers or the
Payment Agent, sell participations to one or more banks or other entities (a
"Participant") in all or a portion of such Lender's rights and obligations under
this Agreement (including all or a portion of its Commitment and the Loans owing
to it); provided that (i) such Lender's obligations under this Agreement shall
remain unchanged, (ii) such Lender shall remain solely responsible to the other
parties hereto for the performance of such obligations and (iii) the Borrowers,
the Co-Administrative Agents, and the other Lenders shall continue to deal
solely and directly with such Lender in connection with such Lender's rights and
obligations under this Agreement.  Any agreement or instrument pursuant to which
a Lender sells such a participation shall provide that such Lender shall retain
the sole right to enforce the Loan Documents and to approve any amendment,
modification or waiver of any provision of the Loan Documents; provided that
such agreement or instrument may provide that such Lender will not, without the
consent of the Participant, agree to any amendment, modification or waiver
described in the first proviso to Section 10.02(b) that affects such
Participant.  Subject to paragraph (f) of this Section, each Borrower agrees
that each Participant shall be entitled to the benefits of Sections 2.13, 2.14
and 2.15 to the same extent as if it were a Lender and had acquired its interest
by assignment pursuant to paragraph (b) of this Section.

          (f)  A Participant shall not be entitled to receive any greater
payment under Section 2.13 or 2.15 than the applicable Lender would have been
entitled to receive with respect to the participation sold to such Participant.
A Participant that would be a Foreign Lender if it were a Lender shall not be
entitled to the benefits of Section 2.15 unless the Borrowers are notified of
the participation sold to such Participant and such Participant agrees, for the
benefit of the Borrowers, to comply with Section 2.15(e) as though it were a
Lender.

          (g)  Any Lender may at any time pledge or assign a security interest
in all or any portion of its rights under this Agreement to secure obligations
of such Lender to a Federal Reserve Bank, and this Section shall not apply to
any such pledge or assignment of a security interest; provided that no such
pledge or assignment of a security interest shall release a Lender from any of
its obligations hereunder or substitute any such pledgee or assignee for such
Lender as a party hereto.

          (h)  Notwithstanding anything to the contrary contained herein, any
Lender (a "Granting Lender") may grant to a special purpose funding vehicle (an
"SPC") of such Granting Lender, identified as such in writing from time to time
by the Granting Lender to the Co-Administrative Agents and the Borrowers, the
option to provide to the Borrowers all or any part of any Loan that such
Granting Lender would otherwise be obligated to make to the Borrowers pursuant
to Section 2.01; provided that (i) nothing herein shall constitute a commitment
to make any Loan by any SPC and (ii) if an SPC elects not to exercise such
option or otherwise fails to provide all or any part of such Loan, the Granting
Lender shall be obligated to make such Loan pursuant to the terms hereof.  The
making of a Loan by an SPC hereunder shall be deemed to utilize the Commitment
of the Granting Lender to the same extent, and as if, such Loan were made
<PAGE>

                                                                              64

by the Granting Lender. Each party hereto hereby agrees that no SPC shall be
liable for any payment under this Agreement for which a Lender would otherwise
be liable, for so long as, and to the extent, the related Granting Lender makes
such payment. In furtherance of the foregoing, each party hereto hereby agrees
that, prior to the date that is one year and one day after the payment in full
of all outstanding senior indebtedness of any SPC, it will not institute
against, or join any other person in instituting against, such SPC any
bankruptcy, reorganization, arrangement, insolvency or liquidation proceedings
or similar proceedings under the laws of the United States or any State thereof.
In addition, notwithstanding anything to the contrary contained in this Section
10.04, any SPC may (i) with notice to, but without the prior written consent of,
the Borrowers and the Co-Administrative Agents and without paying any processing
fee therefor, assign all or a portion of its interests in any Loans to its
Granting Lender or (if consented to by the Borrowers and Co-Administrative
Agents) to any financial institutions providing liquidity and/or credit
facilities to or for the account of such SPC to fund the Loans made by such SPC
or to support the securities (if any) issued by such SPC to fund such Loans and
(ii) disclose on a confidential basis any non-public information relating to its
Loans (but not relating to any of the Borrowers or their Affiliates, except with
such Borrower's consent) to any rating agency, commercial paper dealer or
provider of any surety, guarantee or credit or liquidity enhancement to such
SPC.

          SECTION 10.05.  Survival.  All covenants, agreements, representations
and warranties made by the Borrowers herein, in the other Loan Documents and in
the certificates or other instruments delivered in connection with or pursuant
to this Agreement or any other Loan Document shall be considered to have been
relied upon by the other parties hereto and shall survive the execution and
delivery of the Loan Documents and the making of any Loans, regardless of any
investigation made by any such other party or on its behalf and notwithstanding
that any Co-Administrative Agent or any Lender may have had notice or knowledge
of any Default or incorrect representation or warranty at the time any credit is
extended hereunder, and shall continue in full force and effect as long as the
principal of or any accrued interest on any Loan or any fee or any other amount
payable under this Agreement is outstanding and unpaid and so long as the
Commitments have not expired or terminated.  The provisions of Sections 2.13,
2.14 and 2.15 and 10.03 and Article VIII shall survive and remain in full force
and effect regardless of the consummation of the transactions contemplated
hereby, the repayment of the Loans, the expiration or termination of the
Commitments or the termination of this Agreement or any provision hereof.

          SECTION 10.06.  Counterparts; Integration; Effectiveness.  This
Agreement may be executed in counterparts (and by different parties hereto on
different counterparts), each of which shall constitute an original, but all of
which when taken together shall constitute a single contract.  This Agreement,
the other Loan Documents and any separate letter agreements with respect to fees
payable to the Co-Administrative Agents constitute the entire contract among the
parties relating to the subject matter hereof and supersede any and all previous
agreements and understandings, oral or written, relating to the subject matter
hereof.  Except as provided in Section 4.01, this Agreement shall become
effective when it shall have been executed by the Co-Administrative Agents and
when the Co-Administrative Agents shall have received counterparts hereof which,
when taken together, bear the signatures of each of the other parties hereto
(other than Litton Operating, which shall execute a counterpart of this
Agreement as provided in Section 10.14), and thereafter shall be binding upon
and inure to the benefit of the parties hereto and their respective successors
and assigns.  Delivery of an executed counterpart of a
<PAGE>

                                                                              65

signature page of this Agreement by telecopy shall be effective as delivery of a
manually executed counterpart of this Agreement.

          SECTION 10.07.  Severability.  Any provision of any Loan Document held
to be invalid, illegal or unenforceable in any jurisdiction shall, as to such
jurisdiction, be ineffective to the extent of such invalidity, illegality or
unenforceability without affecting the validity, legality and enforceability of
the remaining provisions of such Loan Document; and the invalidity of a
particular provision in a particular jurisdiction shall not invalidate such
provision in any other jurisdiction.

          SECTION 10.08.  Right of Setoff.  If an Event of Default shall have
occurred and be continuing, each Lender is hereby authorized at any time and
from time to time, to the fullest extent permitted by law, to setoff and apply
any and all deposits (general or special, time or demand, provisional or final)
at any time held and other obligations at any time owing by such Lender or
Affiliate to or for the credit or the account of any Borrower against any of and
all the obligations of the Borrowers  now or hereafter existing under this
Agreement held by such Lender, irrespective of whether or not such Lender shall
have made any demand under this Agreement.  The rights of each Lender under this
Section are in addition to and shall not limit other rights and remedies
(including other rights of setoff) which such Lender may have.

          SECTION 10.09.  Governing Law; Jurisdiction; Consent to Service of
Process.  (a)  This Agreement shall be construed in accordance with and governed
by the law of the State of New York.

          (b)  Each of the Borrowers hereby irrevocably and unconditionally
submits, for itself and its property, to the nonexclusive jurisdiction of the
Supreme Court of the State of New York sitting in New York County and of the
United States District Court of the Southern District of New York, and any
appellate court from any thereof, in any action or proceeding arising out of or
relating to any Loan Document, or for recognition or enforcement of any
judgment, and each of the parties hereto hereby irrevocably and unconditionally
agrees that all claims in respect of any such action or proceeding may be heard
and determined in such New York State or, to the extent permitted by law, in
such Federal court. Each of the parties hereto agrees that a final judgment in
any such action or proceeding shall be conclusive and may be enforced in other
jurisdictions by suit on the judgment or in any other manner provided by law.
Nothing in this Agreement or any other Loan Document shall affect any right that
any Agent or any Lender may otherwise have to bring any action or proceeding
relating to this Agreement or any other Loan Document against the Borrowers or
their properties in the courts of any jurisdiction.

          (c)  Each of the Borrowers hereby irrevocably and unconditionally
waives, to the fullest extent it may legally and effectively do so, any
objection which they may now or hereafter have to the laying of venue of any
suit, action or proceeding arising out of or relating to this Agreement or any
other Loan Document in any court referred to in paragraph (b) of this Section.
Each of the parties hereto hereby irrevocably waives, to the fullest extent
permitted by law, the defense of an inconvenient forum to the maintenance of
such action or proceeding in any such court.
<PAGE>

                                                                              66

          SECTION 10.10.  WAIVER OF JURY TRIAL.  EACH PARTY HERETO HEREBY
WAIVES, TO THE FULLEST EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE
TO A TRIAL BY JURY IN ANY LEGAL PROCEEDING DIRECTLY OR INDIRECTLY ARISING OUT OF
OR RELATING TO THIS AGREEMENT, ANY OTHER LOAN DOCUMENT OR THE TRANSACTIONS
CONTEMPLATED HEREBY OR THEREBY (WHETHER BASED ON CONTRACT, TORT OR ANY OTHER
THEORY). EACH PARTY HERETO (A) CERTIFIES THAT NO REPRESENTATIVE, AGENT OR
ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED, EXPRESSLY OR OTHERWISE, THAT SUCH
OTHER PARTY WOULD NOT, IN THE EVENT OF LITIGATION, SEEK TO ENFORCE THE FOREGOING
WAIVER AND (B) ACKNOWLEDGES THAT IT AND THE OTHER PARTIES HERETO HAVE BEEN
INDUCED TO ENTER INTO THIS AGREEMENT BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS
AND CERTIFICATIONS IN THIS SECTION.

          SECTION 10.11.  Headings.  Article and Section headings and the Table
of Contents used herein are for convenience of reference only, are not part of
this Agreement and shall not affect the construction of, or be taken into
consideration in interpreting, this Agreement.

          SECTION 10.12.  Confidentiality.  Each Lender and each of the Co-
Administrative Agents agrees (on behalf of itself and each of its affiliates,
directors, officers, employees and representatives) to keep confidential, in
accordance with their customary procedures for handling confidential information
of this nature and in accordance with safe and sound banking practices, any non-
public information supplied to it by the Borrowers pursuant to this Agreement
which is identified by the Borrowers as being proprietary, private and/or
confidential at the time the same is delivered to the Lenders or the Co-
Administrative Agents, provided that nothing herein shall limit the disclosure
of any such information (a) to the extent required by statute, rule, regulation
or judicial process, (b) to counsel for any of the Lenders or the Co-
Administrative Agents, (c) to bank examiners, auditors or accountants, (d) to
the Co-Administrative Agents or any other Lender, (e) in connection with any
litigation to which any one or more of the Lenders or the Co-Administrative
Agents is a party or (f) to any assignee or participant (or prospective assignee
or participant) SO LONG AS SUCH ASSIGNEE OR PARTICIPANT (OR PROSPECTIVE ASSIGNEE
OR PARTICIPANT) FIRST EXECUTES AND DELIVERS TO THE RESPECTIVE LENDER A
CONFIDENTIALITY AGREEMENT SUBSTANTIALLY IN THE FORM OF EXHIBIT D (WHEREUPON SUCH
BANK SHALL PROMPTLY DELIVER A COPY OF SUCH CONFIDENTIALITY AGREEMENT TO THE
COMPANY); provided, further, that (i) unless specifically prohibited by
applicable law or court order, each Lender and the Co-Administrative Agents
shall, prior to disclosure thereof, notify the Borrowers of any request for
disclosure of any such non-public information (x) by any governmental agency or
representative thereof (other than any such request in connection with an
examination of the financial condition of such Lender by such governmental
agency) or (y) pursuant to legal process and (ii) in no event shall any Lender
or the Co-Administrative Agents be obligated or required to return any materials
furnished by the Borrowers; and, provided, finally, that no Lender shall,
without the applicable Borrower's prior consent, provide any information
relating to projections of that Borrower's financial performance to any
participant or any prospective assignee or participant (other than any bank or
other financial institution identified to the Borrowers as a participant under
the Existing Credit Agreement in a notice given to the Borrowers prior to the
Restatement Date), and, in lieu
<PAGE>

                                                                              67

thereof, each of the Borrowers shall, promptly following the request of any
Lender and at the Borrowers' expense, provide to a participant the projections
of each of the Borrowers' financial performance that has been made available to
such Lender. Each Lender agrees that money damages would not be a sufficient
remedy for any breach of such Lender's obligations under this Section 10.12 and
that, in addition to all other remedies available to the Borrowers at law or in
equity, the Borrowers shall be entitled to injunctive relief against such Lender
as a remedy for such breach.

          SECTION 10.13.  Interest Rate Limitation.  Notwithstanding anything
herein to the contrary, if at any time the interest rate applicable to any Loan,
together with all fees, charges and other amounts which are treated as interest
on such Loan under applicable law (collectively the "Charges"), shall exceed the
maximum lawful rate (the "Maximum Rate") which may be contracted for, charged,
taken, received or reserved by the Lender holding such Loan in accordance with
applicable law, the rate of interest payable in respect of such Loan hereunder,
together with all Charges payable in respect thereof, shall be limited to the
Maximum Rate and, to the extent lawful, the interest and Charges that would have
been payable in respect of such Loan but were not payable as a result of the
operation of this Section shall be cumulated and the interest and Charges
payable to such Lender in respect of other Loans or periods shall be increased
(but not above the Maximum Rate therefor) until such cumulated amount, together
with interest thereon at the Federal Funds Effective Rate to the date of
repayment, shall have been received by such Lender.

          SECTION 10.14.  Execution by Litton Operating.  At such time as Litton
Operating shall have become a Subsidiary, the Company will forthwith cause
Litton Operating to execute this Agreement in the space provided below, to
deliver a counterpart hereof to the Co-Administrative Agents and to deliver such
other documents as shall be required to satisfy the conditions set forth in
Section 4.01(a), (b), (c) and (e) insofar as they relate to Litton Operating,
and upon such execution and delivery, Litton Operating shall become a party to
and a Borrower under this Agreement with the same effect as if it had originally
been a party hereto.
<PAGE>

                                                                              68

          IN WITNESS WHEREOF, the parties hereto have caused this Agreement to
be duly executed by their respective authorized officers as of the day and year
first above written.

                               NNG, INC.,

                                      by
                                         ______________________________________
                                         Name:
                                         Title:

                               NORTHROP GRUMMAN CORPORATION,

                                      by
                                         ______________________________________
                                         Name:
                                         Title:

                               THE CHASE MANHATTAN BANK,
                               individually and as Co-Administrative Agent and
                               Payment Agent,

                                      by
                                         ______________________________________
                                         Name:
                                         Title:

                               CREDIT SUISSE FIRST BOSTON,
                               individually and as Co-Administrative Agent,

                                      by
                                         ______________________________________
                                         Name:
                                         Title:

                                      by
                                         ______________________________________
                                         Name:
                                         Title:
<PAGE>

                                                                              69

                               CITIBANK, N.A.,

                                      by
                                         _____________________________________
                                         Name:
                                         Title:

                               THE BANK OF NOVA SCOTIA,

                                      by
                                         _____________________________________
                                         Name:
                                         Title:

                               DEUTSCHE BANC ALEX. BROWN
                               SECURITIES INC.

                                      by
                                         _____________________________________
                                         Name:
                                         Title:

                               [OTHER BANKS],

                                      by
                                         _____________________________________
                                         Name:
                                         Title:

In accordance with Section 10.14 of the foregoing Agreement, Litton Industries,
Inc., by its execution hereof, hereby becomes a party to and a Borrower under
such Agreement with the same effect as if it had originally been a party
thereto.

                               LITTON INDUSTRIES, INC.,

                                      by
                                         _____________________________________
                                         Name:
                                         Title:

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00022-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00022-of-00352.parquet"}]]