Document:

Exhibit
4.1

AMENDMENT TO WARRANT AND
PUT OPTION AGREEMENT 

This AMENDMENT (the “Amendment”) to the WARRANT AND
PUT OPTION AGREEMENT (the “Agreement”) originally dated as of November 30,
2006, by and between Gian Luigi Buitoni. (the “Lead Investor”) and Xenomics,
Inc. (the “Company”) is dated as of August 29, 2007.

WITNESSETH:

WHEREAS, on November 30,
2006, the Lead Investor and the Company entered into the Agreement; and

WHEREAS, the parties now
desire to amend Section 1 of such Agreement in order to extend certain dates
for financing to occur and the expiration date;

NOW, THEREFORE, in
consideration of and for the mutual promises and covenants contained herein,
and for other good and valuable consideration, the receipt of which is hereby
acknowledged, the Agreement is hereby amended as follows:

1.                                        Section 1 of the Agreement is hereby replaced
in its entirety with the following:

“Grant. 
The Holder (as defined in Section 3 below) is hereby granted the right
to purchase, at any time from November 30, 2006 until 5:30 p.m., New York time,
to June 30, 2008 (the “Expiration Date”), up to 2,727,272 Units, at an initial
purchase price (subject to adjustment as provided in Section 8 hereof) of $0.55
per Unit (the “Exercise Price”), subject to the terms and conditions of this
Agreement; provided, on or prior to the time of exercise, the Company shall
have received an aggregate of $5.0 million of financing in addition to
financing pursuant to the SPA (the “Financing Condition”).  For the purposes of determining whether the
Financing Condition has been fulfilled, the gross proceeds of the sale of
securities for cash consideration shall be included, without deduction for
commission or expenses of such sales and the date such proceeds are received by
the Company or deposited in escrow shall be considered the date of completion,
provided definitive documentation is executed as accepted by the purchasers of
such securities on or before March 5, 2008. 
The proceeds of securities sold pursuant to the exercise of the Put
Rights set forth in Section 3(b) of this Agreement on or  before February 29, 2008 shall be included in
the determination of whether the Financing Condition has been fulfilled and
those sold thereafter shall be excluded. 
If the Company shall not have attained the financing condition on or
before February 29, 2008, the Lead Investor’s Warrants shall terminate and be
of no further force or effect and thereafter February 29, 2008 shall be deemed
the Expiration Date.  The securities
issuable upon exercise of the Lead Investor’s Warrant are sometimes referred to
herein as the “Lead Investor’s Securities.” 
“

2.                                       (A)                              This Amendment shall be construed and
interpret­ed in accordance with the laws of the State of New York without
giving effect to the conflict of laws rules thereof or the actual domiciles of
the parties.

(B)                                Except as amended hereby, the terms and
provisions of the Agreement shall remain in full force and effect, and the
Agreement is in all respects ratified and confirmed. On and after the date of
this Amendment, each reference in the Agreement to the “Agree­ment”, “hereinafter”,
“herein”, “hereinafter”, “hereunder”, “hereof”, or words of like import shall
mean and be a reference to the Agreement as amended by this Amendment.

(C)                                This Amendment may be executed in one or more
counter­parts, each of which shall be deemed an original and all of which taken
together shall constitute a single Amendment.

IN WITNESS
WHEREOF, the parties hereto have executed this Amendment as of the date first
stated above.

	
  

  	
   

  	
  LEAD INVESTOR

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  

  	
  By:

  	
  /s/ Gianluigi Longinotti-Buitoni

  	
   

  
	
   

  	
   

  	
  Gianluigi Longinotti-Buitoni

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  XENOMICS, INC.

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Gianluigi Longinotti-Buitoni

  	
   

  
	
   

  	
   

  	
  Name: Gianluigi Longinotti-Buitoni

  
	
   

  	
   

  	
  Title: Executive Chairman

  

 

 2Exhibit
4.2

AMENDMENT TO AMENDED AND
RESTATED WARRANT AGREEMENT

This AMENDMENT (the “Amendment”) to the WARRANT
AGREEMENT (the “Agreement”) originally dated as of November 30, 2006, by and
between Gian Luigi Buitoni. (the “Lead Investor”) and Xenomics, Inc. (the
“Company”) is dated as of August 29, 2007.

WITNESSETH:

WHEREAS, on November 30, 2006, the Lead Investor and
the Company entered into the Agreement; and

WHEREAS, the parties now desire to amend Section 1
of such Agreement in order to extend certain dates for financing to occur and
the expiration date;

NOW, THEREFORE, in consideration of and for the
mutual promises and covenants contained herein, and for other good and valuable
consideration, the receipt of which is hereby acknowledged, the Agreement is
hereby amended as follows:

1.                                       Section 1 of the Agreement is hereby replaced
in its entirety with the following:

“Grant.  The Holder (as defined in Section 3 below) is
hereby granted the right to purchase, at any time from November 30, 2006 until
5:30 p.m., New York time, to June 30, 2008 (the “Expiration Date”), up to
6,363,636 Units, at an initial purchase price (subject to adjustment as
provided in Section 8 hereof) of $0.55 per Unit (the “Exercise Price”), subject
to the terms and conditions of this Agreement; provided, on or prior to the
time of exercise, the Company shall have received an aggregate of $5.0 million
of financing in addition to financing pursuant to the SPA (the “Financing
Condition”).  For the purposes of
determining whether the Financing Condition has been fulfilled, the gross
proceeds of the sale of securities for cash consideration shall be included,
without deduction for commission or expenses of such sales and the date such
proceeds are received by the Company or deposited in escrow shall be considered
the date of completion, provided definitive documentation is executed as
accepted by the purchasers of such securities on or before March 5, 2008.  The proceeds of securities sold pursuant to
the exercise of the Put Option on or before February 28, 2008 shall be included
in the determination of whether the Financing Condition has been fulfilled and
those sold thereafter shall be excluded. 
If the Company shall not have attained the financing condition on or
before February 29, 2008, the Lead Investor’s Warrants shall terminate and be
of no further force or effect and thereafter February 29, 2008 shall be deemed
the Expiration Date.  The securities
issuable upon exercise of the Lead Investor’s Warrant are sometimes referred to
herein as the “Lead Investor’s Securities.” 
“

2.                                       (A)                              This Amendment shall be construed and
interpreted in accordance with the laws of the State of New York without giving
effect to the conflict of laws rules thereof or the actual domiciles of the
parties.

(B)                                Except as amended hereby, the terms and
provisions of the Agreement shall remain in full force and effect, and the
Agreement is in all respects ratified and confirmed. On and after the date of
this Amendment, each reference in the Agreement to the “Agreement”, “hereinafter”,
“herein”, “hereinafter”, “hereunder”, “hereof”, or words of like import shall
mean and be a reference to the Agreement as amended by this Amendment.

(C)                                This Amendment may be executed in one or more
counterparts, each of which shall be deemed an original and all of which taken
together shall constitute a single Amendment.

IN WITNESS
WHEREOF, the parties hereto have executed this Amendment as of the date first
stated above.

 

	
  

  	
   

  	
  LEAD INVESTOR

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  

  	
  By:

  	
  /s/ Gianluigi Longinotti-Buitoni

  	
   

  
	
   

  	
   

  	
  Gianluigi Longinotti-Buitoni

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
  XENOMICS, INC.

  
	
   

  	
   

  	
   

  
	
   

  	
   

  	
   

  
	
   

  	
  By:

  	
  /s/ Gianluigi Longinotti-Buitoni

  	
   

  
	
   

  	
   

  	
  Name: Gianluigi Longinotti-Buitoni

  
	
   

  	
   

  	
  Title: Executive Chairman

  
	
   

  	
   

  	
   

  
						

 

 2Exhibit 4.1

EXECUTION COPY

AMENDMENT NO. 1

TO

CREDIT AGREEMENT

This AMENDMENT NO. 1 to
CREDIT AGREEMENT (this “Amendment”), dated as of August 31, 2007, is
entered into by and among AAR Corp. (the “Company”), the financial
institutions party hereto (the “Lenders”), and LaSalle Bank National
Association, as Administrative Agent (the “Administrative Agent”).  Each capitalized term used herein and not
otherwise defined herein shall have the meaning given to it in the
below-defined Credit Agreement.

WITNESSETH

WHEREAS, the Company,
certain Lenders and the Administrative Agent are parties to that certain Credit
Agreement dated as of August 31, 2006 (as the same may be amended, restated,
supplemented or otherwise modified from time to time, the “Credit Agreement”);
and

WHEREAS, the Company
wishes to amend the Credit Agreement in certain respects and the Lenders and
the Administrative Agent are willing to amend the Credit Agreement on the terms
and conditions set forth herein;

NOW, THEREFORE, in
consideration of the premises set forth above, the terms and conditions
contained herein, and other good and valuable consideration, the receipt and
sufficiency of which are hereby acknowledged, the Company, the Administrative
Agent and the Lenders hereby agree as follows:

SECTION 1.           Amendment to Credit Agreement.  Effective as of the date first above written,
and subject to the satisfaction of the conditions to effectiveness set forth in
Section 2 below, the Credit Agreement shall be and hereby is amended as
follows:

(a)           The
Table of Contents of the Credit Agreement is hereby amended to (i) delete “Exhibit
A” appearing therein and substitute “Exhibit A-1” therefor and (ii) insert the
phrase “Exhibit A-2  Form of Amended and
Restated Note” below the phrase “Exhibit A-1 
Form of Note” appearing therein. 

(b)           The
definition of “Agent Fee Letter” set forth in Section 1.1 of the Credit
Agreement is hereby amended and restated in its entirety as follows:

“Agent Fee
Letter means the Fee Letter dated as of June 8, 2006 between the Company
and the Administrative Agent (as amended, restated, supplemented or otherwise
modified from time to time).”

(c)           The
table set forth in the definition of “Applicable Margin” set forth in Section
1.1 of the Credit Agreement is hereby amended and restated in its entirety
as follows:

	
  “Level

  	
   

  	
  Adjusted Total Debt
 to EBITDA Ratio

  	
   

  	
  LIBOR
 Margin

  	
   

  	
  Base Rate
 Margin

  	
   

  	
  Non-Use
 Fee Rate

  	
   

  	
  L/C Fee
 Rate

  
	
  I

  	
   

  	
  Greater than or equal to 3.50 to
  1.00

  	
   

  	
  2.25%

  	
   

  	
  0.25%

  	
   

  	
  0.40%

  	
   

  	
  2.25%

  
	
  II

  	
   

  	
  Greater than or equal to 3.00 to
  1.00 but less than 3.50 to 1.00

  	
   

  	
  1.75%

  	
   

  	
  0.25%

  	
   

  	
  0.35%

  	
   

  	
  1.75%

  
	
  III

  	
   

  	
  Greater than or equal to 2.50 to
  1.00 but less than 3.00 to 1.00

  	
   

  	
  1.50%

  	
   

  	
  0%

  	
   

  	
  0.30%

  	
   

  	
  1.50%

  
	
  IV

  	
   

  	
  Greater than or equal to 2.00 to
  1.00 but less than 2.50 to 1.00

  	
   

  	
  1.25%

  	
   

  	
  0%

  	
   

  	
  0.25%

  	
   

  	
  1.25%

  
	
  V

  	
   

  	
  Less than 2.00 to 1.00

  	
   

  	
  1.00%

  	
   

  	
  0%

  	
   

  	
  0.25%

  	
   

  	
  1.00%”

  

 

(d)           The
definition of “Applicable Margin” set forth in Section 1.1 of the
Credit Agreement is hereby amended (i) 
to insert the word “and” immediately before clause (b) appearing therein
and (ii) to delete the following phrase appearing therein:

“; and (c)  the initial
Applicable Margin on the Closing Date shall be based on Level II until the date
on which the financial statements and Compliance Certificate are required to be
delivered for the Fiscal Quarter ending February 28, 2007”

(e)           Section
1.1 of the Credit Agreement is hereby amended to insert the following
definitions in the appropriate alphabetical order:

“Brown
International Acquisition means the acquisition of the Capital Securities
of Brown International Corporation pursuant to and as contemplated by the Brown
International Acquisition Documents, including the acquisition of Capital
Securities from third parties as contemplated thereby.”

“Brown
International Acquisition Documents means the Stock Purchase Agreement
dated April 12, 2007 by and among AAR Manufacturing Inc., the Company, Brown
International Corporation, and the shareholders and optionholders of Brown
International Corporation and all schedules, exhibits, annexes and amendments
thereto and all side letters and agreements affecting the terms thereof or
entered into in connection therewith.”

“First Amendment
Effective Date means August 31, 2007.”

 2
 

“Reebaire
Aircraft Acquisition means the acquisition of certain assets of Reebaire
Aircraft, Inc. and Reebaire Services, Inc. pursuant to and as contemplated by
the Reebaire Aircraft Acquisition Documents.”

“Reebaire
Aircraft Acquisition Documents means the Asset Purchase Agreement dated
January 12, 2007 by and among the AAR Services, Inc., Reebaire Aircraft, Inc.,
Reebaire Services, Inc., George J. Reeb and Mary H. Reeb and all schedules,
exhibits, annexes and amendments thereto and all side letters and agreements
affecting the terms thereof or entered into in connection therewith.”

(f)            The
second sentence of the definition of “Commitment” set forth in Section
1.1 of the Credit Agreement is hereby amended and restated in its entirety
as follows:

“As of the First
Amendment Effective Date, the amount of each Lender’s commitment to make Loans
is set forth on Annex A.”

(g)           The
definition of “Note” set forth in Section 1.1 of the Credit
Agreement is hereby amended and restated in its entirety as follows:

“Note means a
promissory note substantially in the form of Exhibit A-1 or Exhibit
A-2, as applicable.”

(h)           The
definition of “Unfunded Liability” set forth Section 1.1 of the Credit
Agreement is hereby amended and restated in its entirety as follows:

“Unfunded
Liability means the amount (if any) by which the present value of all
vested and unvested accrued benefits under all Pension Plans exceeds the fair
market value of all assets allocable to those benefits, all determined as of
the then most recent valuation date for each Pension Plan, based on the
actuarial assumptions currently being used for funding each Pension Plan on an
on-going basis.”

(i)            The
definition of “Revolving Commitment” set forth in Section 1.1 of
the Credit Agreement is hereby amended and restated in its entirety as follows:

“Revolving
Commitment means $250,000,000, as reduced from time to time pursuant to Section
6.1, or as may be increased pursuant to Section 2.6.”

(j)            The
definition of “Tangible Net Worth” set forth in Section 1.1 of
the Credit Agreement is hereby amended to delete the reference therein to “20%”
and substituting “30%” therefor.

(k)           The
definition of “Termination Date” set forth in Section 1.1 of the
Credit Agreement is hereby amended to delete the reference therein to “August
31, 2010” and substituting “August 31, 2011” therefor.

 3
 

(l)            Section
2.6 of the Credit Agreement is hereby amended and restated in its entirety
as follows:

“2.6         Increase of Revolving Commitment.  The Company may request that the Revolving
Commitment be increased by an aggregate amount of up to $75,000,000, three
times after the First Amendment Effective Date during the term of this
Agreement.  No such request shall be made
or honored during the continuance of an Event of Default or an Unmatured Event
of Default.  No such request or corresponding
increase shall result in the Revolving Commitment exceeding $325,000,000 minus
the aggregate amount of all reductions in the Revolving Commitment made prior
to the requested date of such increase. 
The Company shall deliver such a request, if at all, in writing to the
Administrative Agent and the Lenders no more than thirty (30) days and no fewer
than ten (10) days before the date on which the Company wishes such increase to
take effect.  The Administrative Agent
shall use reasonable efforts to seek out financial institutions to provide the
additional amount of the requested increase and all such financial institutions
must be in form and substance acceptable to the Company and the Administrative
Agent.  If existing Lenders and, if
applicable, new financial institutions, are willing to provide additional
Commitments in the amount of up to $75,000,000, then such increase shall be
given effect as of the date designated by the Administrative Agent upon the
Administrative Agent’s receipt from the Company, the Lenders and such new
financial institutions of those agreements, documents and instruments
reasonably required by the Administrative Agent (with each such agreement,
document and instrument being in form and substance acceptable to the
Administrative Agent) to consummate such increase, including, without
limitation, amendments, joinder documents, affirmations, legal opinion letters,
and promissory notes.  No such increase
shall be given effect if an Event of Default or Unmatured Event of Default is
outstanding on the proposed effective date for such increase.  No Lender shall have any duty or obligation
to agree to increase its Commitment hereunder upon the Company’s request for
such an increase.”

(m)          Section
9.9(a) of the Credit Agreement is hereby amended by deleting the first
sentence thereof.  

(n)           Section
11.6(c) of the Credit Agreement is hereby amended to insert the following
after the phrase “made by the Company and its Restricted Subsidiaries during
the preceding twelve months”:

“(excluding the aggregate consideration paid by the Company pursuant to
the Brown International Acquisition Documents and the Reebaire Aircraft
Acquisition Documents)”  

(o)           Section
11.13.3 of the Credit Agreement is hereby amended and restated in its
entirety as follows:

 4
 

“11.13.3  Adjusted Total Debt
to EBITDA Ratio.  Not permit the
Adjusted Total Debt to EBITDA Ratio as of the last day of any Computation
Period to exceed the applicable ratio set forth below for such Computation
Period:

	
  Computation

  Period Ending

  	
   

  	
   

  	
   

  	
  Adjusted Total Debt to

  EBITDA Ratio

  	
   

  
	
  First Amendment Effective
  Date, November 30, 2007, February 29, 2008 and May 31, 2008

  	
   

  	
  3.85
  to 1.00

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  August 31, 2008,
  November 30, 2008, February 28, 2009, May 31, 2009, August 31, 2009, November 31,
  2009

  	
   

  	
  3.50
  to 1.00

  	
   

  
	
   

  	
   

  	
   

  	
   

  
	
  February 28, 2010 and
  thereafter

  	
   

  	
    3.25 to
  1.00”

  	
   

  

 

(p)           Section
13.1.6 of the Credit Agreement is hereby amended and restated in its entirety
as follows:

“13.1.6  Pension Plans.  (i) Any Pension Plan shall fail to
satisfy the minimum funding standards of ERISA or the Code for any plan year or
part thereof or a waiver of such standards or extension of any amortization
period is sought or granted under Section 412 of the Code, (ii) a notice of
intent to terminate any Pension Plan shall have been or is reasonably expected
to be filed with the PBGC or the PBGC shall have instituted proceedings under
Section 4042 of ERISA to terminate or appoint a trustee to administer any
Pension Plan or the PBGC shall have notified the Company or any ERISA Affiliate
that a Pension Plan may become a subject of any such proceedings, (iii) the
Unfunded Liability for all Pension Plans, determined on the last day of the
applicable plan years shall equal or exceed an amount equal to 10% of Net
Worth, (iv) the Company or any ERISA Affiliate shall have incurred or is reasonably
expected to incur any liability pursuant to Title I or IV of ERISA or the
penalty or excise tax provisions of the Code relating to employee benefit
plans, (v) the Company or any ERISA Affiliate withdraws from any Multiemployer
Plan, or (vi) the Company or any Subsidiary establishes or amends any employee
welfare benefit plan that provides post-employment welfare benefits in a manner
that would increase the liability of the Company or any Subsidiary thereunder;
and any such event or events described in clauses (i) through (vi) above,
either individually or together with any other such event or events, could
reasonably be expected to have a Material Adverse Effect.

As used in this Section
13.1.6, the terms “employee benefit plan” and “employee welfare benefit
plan” shall have the respective meanings assigned to such terms in Section 3 of
ERISA.”

 5
 

(q)           From and after the First Amendment
Effective Date, Charter One Bank N.A. shall be deemed automatically to have
become a party to the Credit Agreement as a “Lender” and shall have all the
rights and obligations of a “Lender” under the Credit Agreement as if it were
an original signatory thereto.

(r)            Annex A of the Credit
Agreement is hereby amended and restated in its entirety in the form of Exhibit
A hereto.

(s)           The
form of Exhibit B hereto is hereby inserted as Exhibit A-2 of the Credit
Agreement (after giving effect to Section 1(a) of this Amendment).

(t)            Exhibit
C of the Credit Agreement is hereby amended and restated in its entirety in
the form of Exhibit C hereto.

SECTION 2.           Condition
of Effectiveness.  This Amendment
shall become effective and be deemed effective as of the date hereof, subject
to the satisfaction of the conditions precedent that the Administrative Agent
shall have received each of the following:

(a)           counterparts of this Amendment,
executed by each of the parties hereto;

(b)           such other documents as the
Administrative Agent may reasonably request, including such documents,
instruments and other agreements, all in form and substance reasonably satisfactory
to the Administrative Agent and as more fully described on Exhibit D hereto.

SECTION 3.           Representations
and Warranties of the Company. The Company hereby represents and warrants
as follows:

(a)           The Credit Agreement, as amended by
this Amendment constitutes the legal, valid and binding obligation of the
Company and is enforceable against the Company in accordance with its terms,
subject to bankruptcy, insolvency and similar laws affecting the enforceability
of creditors’ rights generally and to general principles of equity.

(b)           Upon the effectiveness of this
Amendment, the Company hereby (i) represents that no Event of Default or
Unmatured Event of Default exists under the terms of the Credit Agreement, (ii)
reaffirms all covenants, representations and warranties made in the Credit
Agreement, and (iii) agrees that all such covenants, representations and
warranties shall be deemed to have been remade as of the effective date of this
Amendment.  The execution, delivery and
effectiveness of this Amendment shall not, except as expressly provided herein,
operate as a waiver of any right, power, or remedy of the Lenders or the
Administrative Agent under the Credit Agreement or any related document,
instrument or agreement.  The
Administrative Agent and the Lenders expressly reserve all of their rights and
remedies, including the right to institute enforcement actions in consequence
of any existing Events of Default or Unmatured Events of Default not waived
hereunder or otherwise at any time without further notice, under the Credit
Agreement, all other documents, instruments and agreements executed in
connection therewith, and applicable law.

SECTION 4.           Effect
on the Credit Agreement.

 6
 

(a)           Upon the effectiveness of this
Amendment, on and after the date hereof, each reference in the Credit Agreement
to “this Agreement,” “hereunder,” “hereof,” “herein” or words of like import
shall mean and be a reference to the Credit Agreement, as amended and modified
hereby.

(b)           Except as specifically amended and
modified above, the Credit Agreement and all other documents, instruments and
agreements executed and/or delivered in connection therewith shall remain in
full force and effect, and are hereby ratified and confirmed.

(c)           The execution, delivery and
effectiveness of this Amendment shall neither, except as expressly provided
herein, operate as a waiver of any right, power or remedy of the Lenders or the
Administrative Agent, nor constitute a waiver of any provision of the Credit
Agreement or any other documents, instruments and agreements executed and/or
delivered in connection therewith.

SECTION 5.           Costs
and Expenses.  The Company agrees to
pay on demand all reasonable costs, fees and out-of-pocket expenses
(including attorneys’ fees, costs and expenses charged to the Administrative
Agent) incurred by the Administrative Agent and the Lenders in connection with
the preparation, arrangement, execution and enforcement of this Amendment.

SECTION 6.           Amendment
Fee.  The Company hereby agrees to
pay, on the date hereof, to the Administrative Agent for the account of each
Lender, an amendment fee in an amount equal to the sum of (a) the product of
(i) 0.05% and (ii) such Lender’s Commitment as of the date hereof prior to
giving effect to this Amendment (which shall be fully earned and non-refundable
as of the date paid) and (b) the product of (i) 0.20% and (ii) the difference
between (x) such Lender’s Commitment as of the date hereof after giving effect
to this Amendment and (y) such Lender’s Commitment as of the date hereof prior
to giving effect to this Amendment (which shall be fully earned and
non-refundable as of the date paid).

SECTION 7.           Governing Law.  This Amendment shall be governed by and
construed in accordance with the internal laws of the State of Illinois without
regard to conflicts of law provisions of the State of Illinois.

SECTION 8.           Headings.  Section headings in this Amendment are
included herein for convenience of reference only and shall not constitute a
part of this Amendment for any other purpose.

SECTION 9.           Counterparts.  This Amendment may be executed by one or more
of the parties to the Amendment on any number of separate counterparts and all
of said counterparts taken together shall be deemed to constitute one and the
same instrument.  A facsimile copy of a
signature hereto shall have the same effect as the original thereof.

SECTION 10.         No
Strict Construction. The parties hereto have participated jointly in the
negotiation and drafting of this Amendment. 
In the event an ambiguity or question of intent or interpretation
arises, this Amendment shall be construed as if drafted jointly by the parties
hereto and no presumption or burden of proof shall arise favoring or
disfavoring any party by virtue of the authorship of any provisions of this
Amendment.

 7
 

[Remainder of page intentionally blank.]

 8

IN WITNESS WHEREOF, this
Amendment has been duly executed as of the day and year first above written.

	
  

  	
  AAR CORP.

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Richard J. Poulton

  
	
   

  	
  Name:  Richard
  J. Poulton

  
	
   

  	
  Title:  Chief
  Financial Officer & Treasurer

  

 

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

	
  

  	
  LASALLE BANK NATIONAL
  ASSOCIATION, 

  as Administrative Agent, Issuing Lender and as a Lender.

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Scott M. Carbon

  
	
   

  	
  Name: Scott M. Carbon

  
	
   

  	
  Title:  First
  Vice President

  

 

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

	
  

  	
  WELLS FARGO BANK, N.A., as a Lender

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Andrew T. Cavallari

  
	
   

  	
  Name:  Andrew
  T. Cavallari

  
	
   

  	
  Title:  Vice
  President

  

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

 

	
  

  	
  NATIONAL CITY BANK, as a Lender

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Stephanie Kline

  
	
   

  	
  Name:  Stephanie
  Kline

  
	
   

  	
  Title:  Vice
  President

  

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

 

	
  

  	
  MERRILL LYNCH CAPITAL CORPORATION, as a Lender

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Don Burkitt

  
	
   

  	
  Name:  Don
  Burkitt

  
	
   

  	
  Title:  Vice
  President

  

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

	
  

  	
  ASSOCIATED BANK, N.A., as a Lender

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Daniel Holzhauer

  
	
   

  	
  Name:  Daniel
  Holzhauer

  
	
   

  	
  Title:  Vice
  President

  

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

	
  

  	
  U.S. BANK, NATIONAL ASSOCIATION, as Syndication
  Agent and as a Lender

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Barry Litwin

  
	
   

  	
  Name:  Barry
  Litwin

  
	
   

  	
  Title:  Senior
  Vice President

  

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

	
  

  	
  CHARTER ONE BANK N.A., as a Lender

  
	
   

  	
   

  
	
   

  	
   

  
	
   

  	
  By: 

  	
  /s/ Kathleen D. Schurr

  
	
   

  	
  Name:  Kathleen
  D. Schurr

  
	
   

  	
  Title:  Vice
  President

  

 

Signature Page to
Amendment No. 1 to

Credit Agreement

 

Exhibit A

ANNEX A

LENDERS AND PRO RATA SHARES

 

	
   

  	
  Lender

  	
   

  	
   

  	
  Revolving

  Commitment Amount

  	
   

  	
  Pro Rata

  Share

  	
   

  
	
  LaSalle Bank, National
  Association

  	
   

  	
  $

  	
  55,000,000

  	
   

  	
  22.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  Wells Fargo Bank, N.A.

  	
   

  	
  $

  	
  40,000,000

  	
   

  	
  16.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  National City Bank

  	
   

  	
  $

  	
  30,000,000

  	
   

  	
  12.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  Merrill Lynch Capital
  Corporation

  	
   

  	
  $

  	
  20,000,000

  	
   

  	
  8.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  Associated Bank, N.A.

  	
   

  	
  $

  	
  25,000,000

  	
   

  	
  10.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  U.S. Bank, National
  Association

  	
   

  	
  $

  	
  40,000,000

  	
   

  	
  16.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  Charter One Bank N.A.

  	
   

  	
  $

  	
  40,000,000

  	
   

  	
  16.000000000

  	
  %

  
	
   

  	
   

  	
   

  	
   

  	
   

  	
   

  
	
  TOTALS

  	
   

  	
  $

  	
  250,000,000

  	
   

  	
  100

  	
  %

  

*              Includes Swing Line
Commitment Amount of $10,000,000.

Exhibit B

EXHIBIT A-2

FORM OF AMENDED AND RESTATED NOTE

Exhibit C

EXHIBIT B

FORM OF COMPLIANCE CERTIFICATE

Attached.

Exhibit D

EXHIBIT B

LIST OF CLOSING DOCUMENTS

Attached.

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00129-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00129-of-00352.parquet"}], [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00129-of-00352.parquet"}]]