Document:

<PAGE>

                                                                    EXHIBIT 10.2

                               SECOND AMENDMENT
                                      TO
                      AMENDED AND RESTATED LOAN AGREEMENT

         THIS SECOND AMENDMENT TO AMENDED AND RESTATED LOAN AGREEMENT, dated as
of the 11th day of May, 2000 (this "Amendment"), is made by and among AMERICAN
                                      ---------
TOWER, L.P., a Delaware corporation, AMERICAN TOWERS, INC., a Delaware limited
partnership, ATC TELEPORTS, INC., a Delaware corporation (collectively, the
"Borrowers"), THE FINANCIAL INSTITUTIONS SIGNATORIES HERETO and TORONTO DOMINION
 ---------
(TEXAS), INC., as administrative agent (in such capacity, the "Administrative
                                                               --------------
Agent").
-----

                             W I T N E S S E T H:
                             - - - - - - - - - -

         WHEREAS, the Borrowers, the Lenders (as defined therein), the Issuing
Bank (as defined therein) and the Administrative Agent are all parties to that
certain Amended and Restated Loan Agreement dated as of January 6, 2000 (as
previously amended and as hereafter amended, modified, restated and supplemented
from time to time, the "Loan Agreement"); and
                        --------------

         WHEREAS, the Borrowers have requested amendments to certain provisions
of the Loan Agreement, and, subject to the terms and conditions set forth
herein, the Lenders and the Administrative Agent are willing to amend certain
provisions of the Loan Agreement as more specifically set forth herein;

         NOW, THEREFORE, in consideration of the premises set forth above, and
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto hereby agree that all capitalized terms
used and not defined herein shall have the meanings ascribed to such terms in
the Loan Agreement, and further hereby agree as follows:

         1. Amendment to Section 5.16. Section 5.16 of the Loan Agreement,
            -------------------------
Special Purpose Subsidiaries, is hereby amended by deleting such Section in its
----------------------------
entirety and by substituting the following in lieu thereof:

                  "Section 5.16 [Intentionally Omitted]."

<PAGE>

         2. Amendment to Section 7.1. Section 7.1 of the Loan Agreement,
            ------------------------
Indebtedness of the Borrowers and the Restricted Subsidiaries, is hereby amended
-------------------------------------------------------------
by deleting subsection (g) thereof in its entirety and by substituting the
following subsection in lieu thereof:

            "(g) Capitalized Lease Obligations not to exceed in the aggregate at
         any one time outstanding $15,000,000.00;"

         3. No Other Amendment. Except for the amendments set forth above, the
            ------------------
text of the Loan Agreement and all other Loan Documents shall remain unchanged
and in full force and effect. No amendment by the Administrative Agent, the
Issuing Bank or the Lenders under the Loan Agreement or any other Loan Document
is granted or intended except as expressly set forth herein, and the
Administrative Agent, the Issuing Bank and the Lenders expressly reserve the
right to require strict compliance in all other respects (whether or not in
connection with any Requests for Advance). Except as set forth herein, the
amendments agreed to herein shall not constitute a modification of the Loan
Agreement or any of the other Loan Documents, or a course of dealing with the
Administrative Agent, the Issuing Bank and the Lenders at variance with the Loan
Agreement or any of the other Loan Documents, such as to require further notice
by the Administrative Agent, the Issuing Bank, the Lenders or the Majority
Lenders to require strict compliance with the terms of the Loan Agreement and
the other Loan Documents in the future.

         4. Condition Precedent.  The effectiveness of this Amendment is subject
            -------------------
to receipt by the Administrative Agent of executed signature pages to this
Amendment from the Majority Lenders.

         5. Counterparts.  This Amendment may be executed in any number of
            ------------
counterparts, each of which shall be deemed to be an original, but all such
separate counterparts shall together constitute but one and the same instrument.

                                      -2-
<PAGE>

         6. Governing Law.  This Amendment shall be construed in accordance
            -------------
with and governed by the laws of the State of New York.

         7. Severability.  Any provision of this Amendment which is prohibited
            ------------
or unenforceable shall be ineffective to the extent of such prohibition or
unenforceability without invalidating the remaining provisions hereof in that
jurisdiction or affecting the validity or enforceability of such provision in
any other jurisdiction.

               [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                      -3-
<PAGE>

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

BORROWERS:                    AMERICAN TOWER, L.P., a Delaware limited
                              partnership

                              By ATC GP INC., its General Partner

                              By: /s/  Joseph L. Winn
                                  ------------------------------------------
                                  Name: Joseph L. Winn
                                       -------------------------------------
                                  Title:   Chief Financial Officer
                                         -----------------------------------

                              AMERICAN TOWERS, INC., a Delaware corporation

                              By: /s/  Joseph L. Winn
                                  ------------------------------------------
                                  Name:  Joseph L. Winn
                                       -------------------------------------
                                  Title: Chief Financial Officer
                                        ------------------------------------

                              ATC TELEPORTS, INC., a Delaware corporation

                              By: /s/  Joseph L. Winn
                                  ------------------------------------------
                                  Name: Joseph L. Winn
                                       -------------------------------------
                                  Title: Chief Financial Officer
                                        ------------------------------------
<PAGE>

ADMINISTRATIVE AGENT
AND LENDERS:               TORONTO DOMINION (TEXAS), INC., as Administrative
                           Agent, for itself, the Issuing Bank and the Lenders,
                           as Issuing Bank and as a Lender

                           By: /s/  Jeffrey R. Lants
                               ---------------------------------------------
                               Name: Jeffrey R. Lants
                               ---------------------------------------------
                               Title:  Vice President
                                     ---------------------------------------
<PAGE>

                           THE BANK OF NEW YORK, as a Lender

                           By: /s/ Geoffrey C. Brooks
                               ---------------------------------------------
                               Name: Geoffrey C. Brooks
                                    ----------------------------------------
                               Title: Senior Vice President
                                     ---------------------------------------
<PAGE>

                           THE CHASE MANHATTAN BANK, as a Lender

                           By: /s/  William E. Rottino
                               --------------------------------------------
                               Name: William E. Rottino
                                    ---------------------------------------
                               Title: Vice President
                                     --------------------------------------
<PAGE>

                           CREDIT SUISSE FIRST BOSTON, as Lender

                           By: /s/ David L. Sawyer
                               ---------------------------------------------
                               Name: David L. Sawyer
                                    ----------------------------------------
                               Title: Vice President
                                     ---------------------------------------

                           By: /s/ William S. Lutkins
                               ---------------------------------------------
                               Name: William S. Lutkins
                                    ----------------------------------------
                               Title: Vice President
                                     ---------------------------------------
<PAGE>

                           ALLFIRST BANK, as a Lender

                           By: /s/ W. Blake Hampson
                              ---------------------------------------------
                              Name: W. Blake Hampson
                                   ----------------------------------------
                              Title: Vice President
                                    ---------------------------------------
<PAGE>

                            ALLSTATE INSURANCE COMPANY, as a Lender

                            By:
                               --------------------------------------------
                               Name:
                                    ---------------------------------------
                               Title:
                                     --------------------------------------

                            By:
                               --------------------------------------------
                               Name:
                                    ---------------------------------------
                               Title:
                                     --------------------------------------

                            ALLSTATE LIFE INSURANCE COMPANY, as a Lender

                            By:
                               --------------------------------------------
                               Name:
                                    ---------------------------------------
                               Title:
                                     --------------------------------------

                            By:
                               --------------------------------------------
                               Name:
                                    ---------------------------------------
                               Title:
                                    ---------------------------------------
<PAGE>

                              AMARA-2 FINANCE, LTD., as a Lender
                              By: INVESCO Senior Secured Management, Inc., as
                              Subadvisor

                              By: /s/ Thomas H.B. Ewald
                                  ------------------------------------------
                                  Name: Thomas H.B. Ewald
                                       -------------------------------------
                                  Title: Authorized Signatory
                                        ------------------------------------

                              AVALON CAPITAL LTD., as a Lender

                              By: INVESCO Senior Secured Management, Inc., as
                              Portfolio Advisor

                              By: /s/ Thomas H.B. Ewald
                                 -------------------------------------------
                                 Name: Thomas H.B. Ewald
                                      --------------------------------------
                                 Title: Authorized Signatory
                                       -------------------------------------

                              TRITON CDO IV, LIMITED, as a Lender
                              By: INVESCO Senior Secured Management, Inc., as
                              Investment Advisor

                              By: /s/ Thomas H.B. Ewald
                                  ------------------------------------------
                                  Name: Thomas H.B. Ewald
                                       -------------------------------------
                                  Title:  Authorized Signatory
                                        ------------------------------------
<PAGE>

                           ARCHIMEDES FUNDING, L.L.C., as a Lender
                           By: ING Capital Advisors LLC, as Collateral Manager

                           By: /s/ Steven Gorski
                               -----------------------------------------------
                               Name: Steven Gorski
                                    ------------------------------------------
                               Title:   Vice President & Senior Credit Analyst
                                     -----------------------------------------

                           ARCHIMEDES FUNDING II, LTD., as a Lender
                           By: ING Capital Advisors LLC, as Collateral Manager

                           By: /s/ Steven Gorski
                              ------------------------------------------------
                              Name: Steven Gorski
                                   -------------------------------------------
                              Title: Vice President & Senior Credit Analyst
                                    ------------------------------------------

                           ARCHIMEDES FUNDING III, LTD., as a Lender
                           By:  ING Capital Advisors LLC, as Collateral Manager

                           By: /s/ Steven Gorski
                              ------------------------------------------------
                              Name: Steven Gorski
                                   -------------------------------------------
                              Title: Vice President & Senior Credit Analyst
                                    ------------------------------------------

                           THE ING CAPITAL SENIOR SECURED
                           HIGH INCOME FUND, L.P., as Assignee
                           By: ING Capital Advisors LLC, as Investment Advisor

                           By: /s/ Steven Gorski
                              ------------------------------------------------
                              Name: Steven Gorski
                                   -------------------------------------------
                              Title:  Vice President & Senior Credit Analyst
                                    ------------------------------------------
<PAGE>

                           ING HIGH INCOME PRINCIPAL PRESERVATION
                           FUND HOLDINGS, LDC, as Assignee
                           By:  ING Capital Advisors LLC, as Investment Advisor

                           By: /s/ Steven Gorski
                              -----------------------------------------------
                              Name: Steven Gorski
                                   ------------------------------------------
                              Title: Vice President & Senior Credit Analyst
                                    -----------------------------------------

                           SEQUILS-ING I (HBDGM), LTD., as Assignee
                           By:  ING Capital Advisors LLC, as Collateral Manager

                           By: /s/ Steven Gorski
                              -----------------------------------------------
                              Name: Steven Gorski
                                   ------------------------------------------
                              Title: Vice President & Senior Credit Analyst
                                    -----------------------------------------
<PAGE>

                           ATHENA CDO, LIMITED, as a Lender
                           By: Pacific Investment Management Company, as its
                           Investment Advisor

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           BEDFORD CDO, LIMITED, as a Lender
                           By: Pacific Investment Management Company, as its
                           Investment Advisor

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           CAPTIVA IV FINANCE LTD., as a Lender
                           As advised by Pacific Investment Management Company

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           CATALINA CDO LTD., as a Lender
                           By:  Pacific Investment Management Company, as its
                           Investment Advisor

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           DELANO COMPANY, as a Lender
                           By:  Pacific Investment Management Company, as its
                           Investment Advisor

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           ENHANCED BOND INDEX FUND SA31 (ACCT 138), as a Lender
                           By:  Pacific Investment Management Company, as its
                           Investment Advisor, acting through The Chase
                           Manhattan Bank in the Nominee Name of Atwell & Co.

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           LUCENT TECHNOLOGIES INC. MASTER PENSION TRUST
                           (ACCT 963), as a Lender
                           By: Pacific Investment Management Company, as its
                           Investment Advisor, acting through The Northern Trust
                           Company in the Nominee Name of How & Co.

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           ROYALTON COMPANY, as a Lender
                           By:  Pacific Investment Management Company, as its
                           Investment Advisor

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           TRIGON HEALTHCARE INC. (ACCT 674), as a Lender
                           By: Pacific Investment Management Company, as its
                           Investment Advisor, acting through The Bank of New
                           York in the Nominee Name of Hare & Co.

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           ARES III CLO LTD., as a Lender
                           By: ARES CLO Management LLC

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           BALANCED HIGH YIELD FUND I LTD., as a Lender
                           By: BHF (USA) Capital Corporation
                               Acting as Attorney-in-Fact

                           By: /s/  Michael Pellerito
                              ------------------------------------------------
                              Name: Michael Pellerito
                                   -------------------------------------------
                              Title: Assistant Vice President
                                    ------------------------------------------

                           By: /s/ Dan Dobrjanskyj
                              ------------------------------------------------
                              Name: Dan Dobrjanskyj
                                   -------------------------------------------
                              Title: Assistant Vice President
                                    ------------------------------------------

                           BALANCED HIGH YIELD FUND II, LTD., as a Lender
                           By: BHF (USA) Capital Corporation
                               Acting as Attorney-in-Fact

                           By: /s/  Michael Pellerito
                              ------------------------------------------------
                              Name: Michael Pellerito
                                   -------------------------------------------
                              Title:  Assistant Vice President
                                    ------------------------------------------

                           By: /s/  Dan Dobrjanskyj
                              ------------------------------------------------
                              Name:  Dan Dobrjanskyj
                                   -------------------------------------------
                              Title: Assistant Vice President
                                    ------------------------------------------
<PAGE>

                           BANK OF AMERICA, N.A., as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           BANK OF MONTREAL, as a Lender

                           By: /s/  Sarah Kim
                              ------------------------------------------------
                              Name: Sarah Kim
                                   -------------------------------------------
                              Title: Director
                                    ------------------------------------------
<PAGE>

                           THE BANK OF NOVA SCOTIA, as a Lender

                           By:  /s/  John W. Campbell
                              ------------------------------------------------
                              Name: John W. Campbell
                                   -------------------------------------------
                              Title:  Managing Director
                                    ------------------------------------------
<PAGE>

                           BANK OF SCOTLAND, as a Lender

                           By: /s/ Janet Taffe
                              ------------------------------------------------
                              Name:  Janet Taffe
                                   -------------------------------------------
                              Title:    Assistant Vice President
                                    ------------------------------------------
<PAGE>

                           BANK UNITED, as a Lender

                           By: /s/  Phil Green
                              ------------------------------------------------
                              Name:  Phil Green
                                   -------------------------------------------
                              Title:    Director Commercial Syndications
                                    ------------------------------------------
<PAGE>

                           BANKERS TRUST COMPANY, as a Lender

                           By: /s/  Gregory P. Shefrin
                              ------------------------------------------------
                              Name: Gregory P. Shefrin
                                   -------------------------------------------
                              Title: Director
                                    ------------------------------------------
<PAGE>

                           BAYERISCHE HYPO- UND VEREINSBANK AG, NEW
                           YORK BRANCH, as a Lender

                           By: /s/  Eric N. Pelletier
                              ------------------------------------------------
                              Name: Eric N. Pelletier
                                   -------------------------------------------
                              Title: Director
                                    ------------------------------------------

                           By: /s/  Ivana Albanese-Rizzo
                              ------------------------------------------------
                              Name: Ivana Albanese-Rizzo
                                   -------------------------------------------
                              Title: Director
                                    ------------------------------------------
<PAGE>

                           BEAR STEARNS CORPORATE LENDING INC., as a Lender

                           By:  /s/  Keith Burnish
                              ------------------------------------------------
                              Name: Keith Burnish
                                   -------------------------------------------
                              Title: Sr. MD, High Yield
                                    ------------------------------------------
<PAGE>

                           CARAVELLE INVESTMENT FUND, L.L.C., as a Lender
                           By: Caravelle Advisors L.L.C.

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           CARLYLE HIGH YIELD PARTNER II, LTD., as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           CITY NATIONAL BANK, as a Lender

                           By: /s/  Patrick M. Drum
                              ------------------------------------------------
                              Name: Patrick M. Drum
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------
<PAGE>

                           COBANK, ACB, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           COOPERATIEVE CENTRALE RAIFFEISEN-
                           BOERENLEENBANK B.A., "RABOBANK
                           NEDERLAND", NEW YORK BRANCH

                           By:  /s/  Douglas W. Zylstra
                              ------------------------------------------------
                              Name: Douglas W. Zylstra
                                   -------------------------------------------
                              Title:  Senior Vice President
                                    ------------------------------------------

                           By: /s/  Ian Reece
                              ------------------------------------------------
                              Name: Ian Reece
                                   -------------------------------------------
                              Title:  Senior Credit Officer
                                    ------------------------------------------
<PAGE>

                           THE CIT GROUP/EQUIPMENT FINANCING , INC., as a Lender

                           By: /s/  Daniel E.A. Nichols
                              ------------------------------------------------
                              Name: Daniel E.A. Nichols
                                   -------------------------------------------
                              Title:  Assistant Vice President
                                    ------------------------------------------
<PAGE>

                           CITICORP USA, INC., as a Lender

                           By:  /s/  Paul J. Corona
                              ------------------------------------------------
                              Name: Paul J. Corona
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------
<PAGE>

                           CREDIT LOCAL DE FRANCE - NEW YORK AGENCY, as a Lender

                           By: /s/  James R. Miller
                              ------------------------------------------------
                              Name: James R. Miller
                                   -------------------------------------------
                              Title: General Manager
                                    ------------------------------------------

                           By: /s/  David Eisendrath
                              ------------------------------------------------
                              Name: David Eisendrath
                                   -------------------------------------------
                              Title: Deputy General Manager
                                    ------------------------------------------
<PAGE>

                           CREDIT LYONNAIS NEW YORK BRANCH, as a Lender

                           By: /s/ Patrick McCarthy
                              ------------------------------------------------
                              Name: Patrick McCarthy
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------
<PAGE>

                           CYPRESSTREE INSTITUTIONAL FUND, LLC, as a Lender
                           By: CypressTree Investment Management Company, Inc.
                               Its Managing Member

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           CYPRESSTREE INVESTMENT FUND, LLC, as a Lender
                           By: CypressTree Investment Management Company, Inc.,
                           its Managing Member

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           CYPRESSTREE INVESTMENT MANAGEMENT COMPANY, INC., as a
                           Lender
                           As: Attorney-in-Fact and on behalf of First Allmerica
                           Financial Life Insurance Company as Portfolio Manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           CYPRESSTREE INVESTMENT PARTNERS II, LTD., as a Lender
                           By: CypressTree Investment Management Company, Inc.,
                           as Portfolio Manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           CYPRESSTREE SENIOR FLOATING RATE FUND, as a Lender
                           By: CypressTree Investment Management Company, Inc.,
                           as Portfolio Manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           NORTH AMERICAN SENIOR FLOATING RATE FUND, as a Lender
                           By: CypressTree Investment Management Company, Inc.,
                           as Portfolio Manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                   -------------------------------------------
<PAGE>

                           DE NATIONALE INVESTERINGSBANK N.V., as a Lender

                           By:  /s/  Hank L. Huizing
                              ------------------------------------------------
                              Name:  Hank L. Huizing
                                   -------------------------------------------
                              Title: Senior Vice President
                                    ------------------------------------------

                           By: /s/  Dr. Paul S. Jinek
                              ------------------------------------------------
                              Name: Dr. Paul S. Jinek
                                   -------------------------------------------
                              Title: Executive Vice President
                                    ------------------------------------------
<PAGE>

                           DRESDNER BANK AG, NEW YORK AND GRAND
                           CAYMAN BRANCHES, as a Lender

                           By: /s/  Patrick A. Keleher
                              ------------------------------------------------
                              Name: Patrick A. Keleher
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------

                           By: /s/  Brian E. Haughney
                              ------------------------------------------------
                              Name: Brian E. Haughney
                                   -------------------------------------------
                              Title:  Assistant Vice President
                                    ------------------------------------------
<PAGE>

                           EATON VANCE INSTITUTIONAL SENIOR LOAN
                           FUND, as a Lender
                           By:  Eaton Vance Management, as Investment Advisor

                           By: /s/  Payson F. Swaffield
                              ------------------------------------------------
                              Name: Payson F. Swaffield
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------

                           EATON VANCE SENIOR INCOME TRUST, as a Lender
                           By:  Eaton Vance Management, as Investment Advisor

                           By: /s/  Payson F. Swaffield
                              ------------------------------------------------
                              Name:  Payson F. Swaffield
                                   -------------------------------------------
                              Title:  Vice President
                                    ------------------------------------------

                           OXFORD STRATEGIC INCOME FUND, as a Lender
                           By:  Eaton Vance Management, as Investment Advisor

                           By: /s/  Payson F. Swaffield
                              ------------------------------------------------
                              Name: Payson F. Swaffield
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------

                           SENIOR DEBT PORTFOLIO, as a Lender
                           By: Boston Management and Research, as Investment
                           Advisor

                           By: /s/  Payson F. Swaffield
                              ------------------------------------------------
                              Name: Payson F. Swaffield
                                   -------------------------------------------
                              Title:  Vice President
                                    ------------------------------------------
<PAGE>

                           ELT LTD., as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           ERSTE BANK DER OESTERREICHISCHEN SPARKASSEN AG,
                           as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           FC-CBO II LIMITED, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           FIRST DOMINION FUNDING III, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           FIRST UNION NATIONAL BANK, as a Lender

                           By: /s/  Bruce W. Loftin
                              ------------------------------------------------
                              Name: Bruce W. Loftin
                                   -------------------------------------------
                              Title: Senior Vice President
                                    ------------------------------------------
<PAGE>

                           FLEET NATIONAL BANK, as a Lender

                           By: /s/  Amy B. Peder
                              ------------------------------------------------
                              Name: Amy B. Peder
                                   -------------------------------------------
                              Title: AVP
                                    ------------------------------------------
<PAGE>

                           FRANKLIN FLOATING RATE TRUST, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           THE FUJI BANK, LIMITED, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                               Title:
                                     -----------------------------------------
<PAGE>

                           GALAXY CLO 1999-1, LTD., as a Lender
                           By:  SAI Investment Adviser, Inc.,
                           its Collateral Agent

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           GENERAL ELECTRIC CAPITAL CORPORATION, as a Lender

                           By: /s/  Brian P. Ward
                              ------------------------------------------------
                              Name: Brian P. Ward
                                   -------------------------------------------
                              Title: Manager - Operations
                                    ------------------------------------------
<PAGE>

                           GLENEAGLES TRADING LLC, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           OLYMPIC FUNDING TRUST, SERIES 1999-1, as a Lender

                           By:  /s/ Ashley R. Hamilton
                              ------------------------------------------------
                              Name: Ashley R. Hamilton
                                   -------------------------------------------
                              Title: Authorized Agent
                                    ------------------------------------------

                           PPM SPYGLASS FUNDING TRUST, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           WINGED FOOT FUNDING TRUST, as a Lender

                           By:  /s/  Ashley R. Hamilton
                              ------------------------------------------------
                              Name:  Ashley R. Hamilton
                                   -------------------------------------------
                              Title:  Authorized Agent
                                    ------------------------------------------
<PAGE>

                           HIGHLAND LEGACY LIMITED, as a Lender
                           By: Highland Capital Management, L.P.
                               as Collateral Manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           HOWARD BANK, N.A., as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           IBM CREDIT CORPORATION, as a Lender

                           By:    /s/  Ronald J. Bachner
                              ------------------------------------------------
                              Name:  Ronald J. Bachner
                                   -------------------------------------------
                              Title: Mgr. Com & Specialty Financing 5/9/00
                                    ------------------------------------------
<PAGE>

                           KEMPER FLOATING RATE FUND, as a Lender

                           By: /s/  Kelly Babson
                              ------------------------------------------------
                              Name: Kelly Babson
                                   -------------------------------------------
                              Title:  Vice President
                                    ------------------------------------------
<PAGE>

                           KEY CORPORATE CAPITAL INC., as a Lender

                           By:    /s/  Kenneth J. Keeler
                              ------------------------------------------------
                              Name:  Kenneth J. Keeler
                                   -------------------------------------------
                              Title:  Senior Vice President
                                    ------------------------------------------
<PAGE>

                           KZH III LLC, as a Lender

                           By:  /s/  Susan Lee
                              ------------------------------------------------
                              Name:  Susan Lee
                                   -------------------------------------------
                              Title:  Authorized Agent
                                    ------------------------------------------

                           KZH CYPRESSTREE-1 LLC, as a Lender

                           By:  /s/  Susan Lee
                              ------------------------------------------------
                              Name: Susan Lee
                                   -------------------------------------------
                              Title:  Authorized Agent
                                    ------------------------------------------

                           KZH ING-1 LLC, as a Lender

                           By: /s/ Susan Lee
                              ------------------------------------------------
                              Name:  Susan Lee
                                   -------------------------------------------
                              Title: Authorized Agent
                                    ------------------------------------------

                           KZH ING-2 LLC, as a Lender

                           By: /s/ Susan Lee
                              ------------------------------------------------
                              Name:  Susan Lee
                                   -------------------------------------------
                              Title:  Authorized Agent
                                    ------------------------------------------

                           KZH ING-3 LLC, as a Lender

                           By: /s/ Susan Lee
                              ------------------------------------------------
                              Name:  Susan Lee
                                   -------------------------------------------
                              Title: Authorized Agent
                                    ------------------------------------------

<PAGE>

                           KZH LANGDALE LLC, as a Lender

                           By: /s/  Susan Lee
                              ------------------------------------------------
                              Name: Susan Lee
                                   -------------------------------------------
                              Title:  Authorized Agent
                                    ------------------------------------------

                           KZH RIVERSIDE LLC, as a Lender

                           By: /s/  Susan Lee
                              ------------------------------------------------
                              Name: Susan Lee
                                   -------------------------------------------
                              Title:  Authorized Agent
                                    ------------------------------------------

                           KZH SHOSHONE LLC, as a Lender

                           By: /s/ Susan Lee
                              ------------------------------------------------
                              Name: Susan Lee
                                   -------------------------------------------
                              Title: Authorized Agent
                                    ------------------------------------------

                           KZH SOLEIL-2 LLC, as a Lender

                           By: /s/ Susan Lee
                              ------------------------------------------------
                              Name: Susan Lee
                                   -------------------------------------------
                              Title: Authorized Agent
                                    ------------------------------------------

<PAGE>

                           LEHMAN COMMERCIAL PAPER INC., as a Lender

                           By: /s/  Michele Swanson
                              ------------------------------------------------
                              Name: Michele Swanson
                                   -------------------------------------------
                              Title:  Authorized Signatory
                                    ------------------------------------------
<PAGE>

                           LIBERTY-STEIN ROE ADVISOR FLOATING RATE ADVANTAGE
                           FUND, as a Lender
                           By:  Stein Roe & Farnham Incorporated, As Advisor

                           By: /s/ Kathleen A. Zarn
                              ------------------------------------------------
                              Name:  Kathleen A. Zarn
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------

                           STEIN ROE FLOATING RATE FUND
                           LIMITED LIABILITY COMPANY, as a Lender

                           By: /s/  Kathleen A. Zarn
                              ------------------------------------------------
                              Name: Kathleen A. Zarn
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------
                                    Stein Roe & Farnham Incorporated,
                                    as Advisor to the Stein Roe Floating Rate
                                    Limited Liability Company
<PAGE>

                           MERRILL LYNCH GLOBAL INVESTMENT SERIES: INCOME
                           STRATEGIES PORTFOLIO, as a Lender
                           By:  Merrill Lynch Asset Management, L.P., as
                           Investment Advisor

                           By: /s/  Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title: Authorized Signatory
                                    ------------------------------------------

                           MERRILL LYNCH PRIME RATE PORTFOLIO, as a Lender
                           By: Merrill Lynch Asset Management, L.P., as
                           Investment Advisor

                           By: /s/  Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title: Authorized Signatory
                                    ------------------------------------------

                           MERRILL LYNCH SENIOR FLOATING RATE FUND, INC.,
                           as a Lender

                           By: /s/  Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title: Authorized Signatory
                                    ------------------------------------------

                           MERRILL LYNCH SENIOR FLOATING RATE FUND II, INC.,
                           as a Lender

                           By: /s/  Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title:  Authorized Signatory
                                    ------------------------------------------
<PAGE>

                           SENIOR HIGH INCOME PORTFOLIO, INC., as a Lender

                           By: /s/  Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title: Authorized Signatory
                                    ------------------------------------------

                           DEBT STRATEGIES FUND, INC., as a Lender

                           By:  /s/  Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title:  Authorized Signatory
                                    ------------------------------------------

                           DEBT STRATEGIES FUND II, INC., as a Lender

                           By:  /s/ Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title: Authorized Signatory
                                    ------------------------------------------

                           DEBT STRATEGIES FUND III, INC., as a Lender

                           By: /s/ Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                   -------------------------------------------
                              Title:  Authorized Signatory
                                    ------------------------------------------

                           LONGHORN CDO (CAYMAN) LTD., as a Lender
                           By: Merrill Lynch Asset Management, L.P., as Attorney
                           In Fact

                           By: /s/ Joseph Matteo
                              ------------------------------------------------
                              Name: Joseph Matteo
                                    ------------------------------------------
                              Title:  Authorized Signatory
                                    ------------------------------------------
<PAGE>

                           METROPOLITAN LIFE INSURANCE COMPANY, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           THE MITSUBISHI TRUST AND BANKING CORPORATION,
                           as a Lender

                           By: /s/  Toshihiro Hayashi
                              ------------------------------------------------
                              Name: Toshihiro Hayashi
                                   -------------------------------------------
                              Title: Senior Vice President
                                    ------------------------------------------
<PAGE>

                           MONUMENT CAPITAL LTD., as a Lender
                           By: Alliance Capital Management L.P., as Investment
                           Manager
                           By: Alliance Capital Management Corporation, as
                           General Partner

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           MONY LIFE INSURANCE COMPANY, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           MORGAN STANLEY DEAN WITTER PRIME INCOME
                           TRUST, as a Lender

                           By: /s/ Sheila Finnerty
                              ------------------------------------------------
                              Name: Sheila Finnerty
                                   -------------------------------------------
                              Title: Sr. Vice President
                                    ------------------------------------------
<PAGE>

                           MOUNTAIN CAPITAL CLO I, LTD., as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           NATEXIS BANQUE, as a Lender

                           By: /s/  Evan S. Kraus
                              ------------------------------------------------
                              Name: Evan S. Kraus
                                   -------------------------------------------
                              Title: Assistant Vice President
                                    ------------------------------------------

                              /s/ Cynthia E. Sachs
                                  Cynthia E. Sachs
                                  VP Group Manager
<PAGE>

                           NATIONAL CITY BANK, as a Lender

                           By: /s/  Jon W. Peterson
                              ------------------------------------------------
                              Name: Jon W. Peterson
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------
<PAGE>

                           OCTAGON INVESTMENT PARTNERS II, LLC, as a Lender
                           By: Octagon Credit Investors, LLC, as sub-investment
                           manager

                           By: /s/  Andrew D. Gordon
                              ------------------------------------------------
                              Name:  Andrew D. Gordon
                                   -------------------------------------------
                              Title: Portfolio Manager
                                    ------------------------------------------

                           OCTAGON INVESTMENT PARTNERS III, LTD., as a Lender
                           By: Octagon Credit Investors, LLC, as Portfolio
                           Manager

                           By: /s/  Andrew D. Gordon
                              ------------------------------------------------
                              Name: Andrew D. Gordon
                                   -------------------------------------------
                              Title: Portfolio Manager
                                    ------------------------------------------
<PAGE>

                           OPPENHEIMER SENIOR FLOATING RATE FUND, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           PILGRIM PRIME RATE TRUST, as a Lender
                           By: Pilgrim Investments, Inc., as its investment
                           manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           ML CLO XV PILGRIM AMERICA (CAYMAN) LTD., as a Lender
                           By: Pilgrim Investments, Inc., as its investment
                           manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           ML CLO XX PILGRIM AMERICA (CAYMAN) LTD., as a Lender
                           By: Pilgrim Investments, Inc., as its investment
                           manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------

                           PILGRIM CLO 1999-1 LTD., as a Lender
                           By: Pilgrim Investments, Inc., as its investment
                           manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           SEQUILS-PILGRIM 1, LTD., as a Lender
                           By: Pilgrim Investments, Inc., as its investment
                           manager

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           PNC BANK, NATIONAL ASSOCIATION, as a Lender

                           By: /s/  Keith R. White
                              ------------------------------------------------
                              Name: Keith R. White
                                   -------------------------------------------
                              Title:  Vice President
                                    ------------------------------------------
<PAGE>

                           ROYAL BANK OF CANADA, as a Lender

                           By: /s/  Andrew C. Williamson
                              ------------------------------------------------
                              Name:  Andrew C. Williamson
                                   -------------------------------------------
                              Title:  Vice President
                                    ------------------------------------------
<PAGE>

                           SANKATY HIGH YIELD PARTNERS II, L.P., as a Lender

                           By:  /s/  Diane J. Exter
                              ------------------------------------------------
                              Name:  Diane J. Exter
                                   -------------------------------------------
                              Title:  Executive Vice President
                                    ------------------------------------------
                                      Portfolio Manager

                           GREAT POINT CLO 1999-1 LTD., as a Lender

                           By: /s/  Diane J. Exter
                              ------------------------------------------------
                              Name:  Diane J. Exter
                                   -------------------------------------------
                              Title: Executive Vice President
                                    ------------------------------------------
                                     Portfolio Manager
<PAGE>

                           SUNTRUST BANK, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           TEXTRON FINANCIAL CORPORATION, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           UNION BANK OF CALIFORNIA, N.A., as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           US TRUST, as a Lender

                           By:
                              ------------------------------------------------
                              Name:
                                   -------------------------------------------
                              Title:
                                    ------------------------------------------
<PAGE>

                           VAN KAMPEN SENIOR INCOME TRUST, as a Lender
                           By:  Van Kampen Investment Advisory Corp.

                           By: /s/  Darvin D. Pierce
                              ------------------------------------------------
                              Name: Darvin D. Pierce
                                   -------------------------------------------
                              Title: Vice President
                                    ------------------------------------------
<PAGE>

                           WEBSTER BANK, as a Lender

                           By: /s/ Paul T. Savino
                              ------------------------------------------------
                              Name:  Paul T. Savino
                                   -------------------------------------------
                              Title:  Vice President
                                    ------------------------------------------<PAGE>

                                                                    EXHIBIT 10.3

                                                                  EXECUTION COPY

                          WAIVER AND THIRD AMENDMENT
                                      TO
                      AMENDED AND RESTATED LOAN AGREEMENT

  THIS WAIVER AND THIRD AMENDMENT TO AMENDED AND RESTATED LOAN AGREEMENT, dated
as of the 13th day of October, 2000 (this "Amendment"), is made by and among
                                           ---------
AMERICAN TOWER, L.P., a Delaware limited partnership, AMERICAN TOWERS, INC., a
Delaware corporation, VERESTAR, INC. (f/k/a ATC TELEPORTS, INC.), a Delaware
corporation (collectively, the "Borrowers"), THE FINANCIAL INSTITUTIONS
                                ---------
SIGNATORIES HERETO and TORONTO DOMINION (TEXAS), INC., as administrative agent
(in such capacity, the "Administrative Agent").
                        --------------------

                              W I T N E S S E T H:
                              -------------------

  WHEREAS, the Borrowers, the Lenders (as defined therein), the Issuing Bank (as
defined therein) and the Administrative Agent are all parties to that certain
Amended and Restated Loan Agreement dated as of January 6, 2000 (as previously
amended and as hereafter amended, modified, restated and supplemented from time
to time, the "Loan Agreement"); and
              --------------

  WHEREAS, the Borrowers have requested amendments to certain provisions of the
Loan Agreement, and, subject to the terms and conditions set forth herein, the
Lenders and the Administrative Agent are willing to amend certain provisions of
the Loan Agreement as more specifically set forth herein;

  NOW, THEREFORE, in consideration of the premises set forth above, and other
good and valuable consideration, the receipt and sufficiency of which are hereby
acknowledged, the parties hereto hereby agree that all capitalized terms used
and not defined herein shall have the meanings ascribed to such terms in the
Loan Agreement, and further hereby agree as follows:

  1.  Waiver.  As a result of certain accounting treatments, the Borrower and
      ------
its Subsidiaries have entered into certain transponder lease agreements in
violation of Section 7.1(g) of the Loan Agreement.  The Borrower has requested
that the Majority Lenders waive any Default or Event of Default that may have
occurred as a result of its entering into the transponder lease agreements.
Upon the execution hereof by the Majority Lenders, the Majority Lenders hereby
waive any Default or Event of Default under Section 7.1(g) of the Loan Agreement
that may have existed on or prior to the effective date of this Amendment solely
as a result of the Borrower's transponder lease agreements.
<PAGE>

     2.  Amendments.  The Loan Agreement is hereby amended as more fully set for
         ----------
the below:

         (a)  Amendment to Article 1.  Section 1.1 of the Loan Agreement,
              ----------------------
Definitions, is hereby amended by deleting the definitions of "Available
                                                               ---------
Revolving Loan Commitment" and "Available Term Loan A Commitment" in their
-------------------------       --------------------------------
entireties and by substituting the following definitions in lieu thereof:

              "Available Revolving Loan Commitment" shall mean, as of any date,
               -----------------------------------
     (a) for all times prior to the Borrowing BasE Termination Date, the lesser
     of (i)(A) the Revolving Loan Commitments in effect on such date minus (B)
                                                                     -----
     the sum of (1) the Revolving Loans then outstanding plus (2) the Letter of
                                                         ----
     Credit Obligations then outstanding, and (ii)(A) the Borrowing Base on
                                          ---
     such date minus (B) the sum of (1) all Loans then outstanding (together
               -----
     with all Term Loan A Loans to be advanced on such date) plus (2) the
                                                             ----
     Letter of Credit Obligations then outstanding plus (3) any Capitalized
                                                   ----
     Lease Obligations then outstanding in excess of $50,000,000.00, and, (b)
     for all other times, the difference between (i) the Revolving Loan
     Commitments in effect on such date minus (ii) the sum of (A) the Revolving
                                        -----
     Loans then outstanding plus (B) the Letter of Credit Obligations then
                            ----
     outstanding."

              "Available Term Loan A Commitment" shall mean, as of any date (and
               --------------------------------
     subject to Section 2.1(b) hereof), (a) for all times prior to the Borrowing
     Base Termination Date, the lesser of (i)(A) the Term Loan A Commitments in
     effect on such date minus (B) the Term Loan A Loans then outstanding, and
                         -----                                             ---
     (ii)(A) the Borrowing Base on such date minus (B) the sum of (1) all Loans
                                             -----
     then outstanding (together with all Revolving Loans to be advanced on such
     date) plus (2) the Letter of Credit Obligations then outstanding plus (3)
           ----                                                       ----
     any Capitalized Lease Obligations then outstanding in excess of
     $50,000,000.00, and (b) for all other times, the difference between (i) the
     Term A Loan Commitment in effect on such date and (ii) the Term A Loans
     then outstanding."

         (b)  Amendment to Article 2. Section 2.7(b)(vi) of the Loan Agreement
              ----------------------
Loans in excess of Borrowing Base, is hereby amended by deleting such section
---------------------------------
in its entirety and substituting in lieu thereof the following section:

              "(vi)  Loans in Excess of Borrowing Base.  If, on any date prior
                     ---------------------------------
     to the Borrowing Base Termination Date, the Loans then outstanding exceed
     the difference of (A) the Borrowing Base minus (B) any Capitalized Lease
                                              -----
     Obligations then outstanding in excess of $50,000,000.00 on such date, the
     Loans shall be repaid in an amount equal to, in the aggregate, such excess.
     The Borrowers may, at their option, apply such reduction to the Revolving
     Loans, the Term Loan A Loans or Term Loan B Loans."

         (c)  Amendment to Article 6. Section 6.3 of the Loan Agreement,
              ----------------------
Performance Certificates, is hereby amended by deleting subsection (c) thereof
in its entirety and by substituting the following subsection in lieu thereof:

                                      -2-
<PAGE>

               "(c)  containing a list of all Acquisitions, Investments,
     Restricted Payments, dispositions of assets and any outstanding Capitalized
     Lease Obligations from the Agreement Date through the date of such
     certificate together with the total amount for each of the foregoing
     categories;"

          (d)  Amendment to Article 7.  Section 7.1 of the Loan Agreement,
               ----------------------
Indebtedness of the Borrowers and the Restricted Subsidiaries, is hereby
-------------------------------------------------------------
amended by deleting subsection (g) thereof in its entirety and by substituting
the following subsection in lieu thereof:

               "(g)  Capitalized Lease Obligations not to exceed in the
     aggregate at any one time outstanding $100,000,000.00;"

     3.  No Other Amendment.  Except for the amendments and waiver set
         ------------------
forth above, the text of the Loan Agreement and all other Loan Documents shall
remain unchanged and in full force and effect.  No amendment or waiver by the
Administrative Agent, the Issuing Bank or the Lenders under the Loan Agreement
or any other Loan Document is granted or intended except as expressly set forth
herein, and the Administrative Agent, the Issuing Bank and the Lenders expressly
reserve the right to require strict compliance in all other respects (whether or
not in connection with any Requests for Advance).  Except as set forth herein,
the amendments and waiver agreed to herein shall not constitute a modification
of the Loan Agreement or any of the other Loan Documents, or a course of dealing
with the Administrative Agent, the Issuing Bank and the Lenders at variance with
the Loan Agreement or any of the other Loan Documents, such as to require
further notice by the Administrative Agent, the Issuing Bank, the Lenders or the
Majority Lenders to require strict compliance with the terms of the Loan
Agreement and the other Loan Documents in the future.

     4.  Condition Precedent.  The effectiveness of this Amendment is
         -------------------
subject to receipt by the Administrative Agent of executed signature pages to
this Amendment from the Majority Lenders.

     5.  Counterparts.  This Amendment may be executed in any number of
         ------------
counterparts, each of which shall be deemed to be an original, but all such
separate counterparts shall together constitute but one and the same instrument.

     6.  Governing Law.  This Amendment shall be construed in accordance
         -------------
with and governed by the laws of the State of New York.

     7.  Severability.  Any provision of this Amendment which is
         ------------
prohibited or unenforceable shall be ineffective to the extent of such
prohibition or unenforceability without invalidating the remaining provisions
hereof in that jurisdiction or affecting the validity or enforceability of such
provision in any other jurisdiction.

               [REMAINDER OF THIS PAGE INTENTIONALLY LEFT BLANK]

                                      -3-
<PAGE>

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

BORROWERS:               AMERICAN TOWER, L.P., a Delaware limited partnership

                         By ATC GP INC., its General Partner

                         By: /s/ Joseph L. Winn
                             -------------------------------------------------
                             Name:  Joseph L. Winn
                                    ------------------------------------------
                             Title: Chief Financial Officer
                                    ------------------------------------------

                         AMERICAN TOWERS, INC., a Delaware corporation

                         By: /s/ Joseph L. Winn
                             -------------------------------------------------
                             Name:  Joseph L. Winn
                                    ------------------------------------------
                             Title: Chief Financial Officer
                                    ------------------------------------------

                         VERESTAR, INC., a Delaware corporation

                         By: /s/ Joseph L. Winn
                             -------------------------------------------------
                             Name:  Joseph L. Winn
                                    ------------------------------------------
                             Title: Chief Financial Officer
                                    ------------------------------------------
<PAGE>

ADMINISTRATIVE AGENT
AND LENDERS:             TORONTO DOMINION (TEXAS), INC., as Administrative
                         Agent, for itself, the Issuing Bank and the Lenders, as
                         Issuing Bank and as a Lender

                         By: /s/ Jano Mott
                             ----------------------------------------
                            Name:  Jano Mott
                                   ----------------------------------
                            Title: Vice President
                                   ----------------------------------
<PAGE>

                            THE BANK OF NEW YORK, as a Lender

                            By: /s/ Geoffrey C. Brooks
                                -------------------------------------------
                                Name:  Geoffrey C. Brooks
                                      -------------------------------------
                                Title: Senior Vice President
                                       ------------------------------------
<PAGE>

                            THE CHASE MANHATTAN BANK, as a Lender

                            By: /s/ William E. Rottino
                                -------------------------------------------
                                Name:  William E. Rottino
                                      -------------------------------------
                                Title: Vice President
                                       ------------------------------------
<PAGE>

                            CREDIT SUISSE FIRST BOSTON, as Lender

                            By: /s/ David L. Sawyer
                                -------------------------------------------
                                Name:  David L. Sawyer
                                      -------------------------------------
                                Title: Vice President
                                      -------------------------------------

                            By: /s/ Kristin Lepri
                                -------------------------------------------
                                Name:  Kristin Lepri
                                      -------------------------------------
                                Title: Associate
                                      -------------------------------------
<PAGE>

                         ALLFIRST BANK, as a Lender

                         By: /s/ W. Blake Hampson
                             -----------------------------------------
                             Name:  W. Blake Hampson
                                   -----------------------------------
                             Title: Vice President
                                    ----------------------------------
<PAGE>

                         ALLSTATE LIFE INSURANCE COMPANY, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         AIMCO CDO SERIES 2000-A, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         AMARA-2 FINANCE, LTD., as a Lender
                         By:  INVESCO Senior Secured Management, Inc., as
                         Subadvisor

                         By: /s/ Thomas H.B. Ewald
                             ------------------------------------------------
                             Name:  Thomas H.B. Ewald
                                    -----------------------------------------
                             Title: Authorized Signatory
                                    -----------------------------------------

                         AVALON CAPITAL LTD., as a Lender
                         By:  INVESCO Senior Secured Management, Inc., as
                         Portfolio Advisor

                         By: /s/ Thomas H.B. Ewald
                             -----------------------------------------------
                             Name:  Thomas H.B. Ewald
                                    ----------------------------------------
                             Title: Authorized Signatory
                                    ----------------------------------------

                         AVALON CAPITAL LTD. 2, as a Lender
                         By:  INVESCO Senior Secured Management, Inc., as
                         Portfolio Advisor

                         By: /s/ Thomas H.B. Ewald
                             -----------------------------------------------
                             Name:  Thomas H.B. Ewald
                                    ----------------------------------------
                             Title: Authorized Signatory
                                    ----------------------------------------

                         CERES II FINANCE LTD., as a Lender
                         By:  INVESCO Senior Secured Management, Inc., as Sub-
                         Managing Agent (Financial)

                         By: /s/ Thomas H.B. Ewald
                             -----------------------------------------------
                             Name:  Thomas H.B. Ewald
                                    ----------------------------------------
                             Title: Authorized Signatory
                                    ----------------------------------------
<PAGE>

                         TRITON CDO IV, LIMITED, as a Lender
                         By:  INVESCO Senior Secured Management, Inc., as
                         Investment Advisor

                         By: /s/ Thomas H.B. Ewald
                             -------------------------------------------
                             Name:  Thomas H.B. Ewald
                                    ------------------------------------
                             Title: Authorized Signatory
                                    ------------------------------------
<PAGE>

                         ARCHIMEDES FUNDING, L.L.C., as a Lender
                         By: ING Capital Advisors LLC, as Collateral Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         ARCHIMEDES FUNDING II, LTD., as a Lender
                         By: ING Capital Advisors LLC, as Collateral Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         ARCHIMEDES FUNDING III, LTD., as a Lender
                         By: ING Capital Advisors LLC, as Collateral Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         THE ING CAPITAL SENIOR SECURED HIGH INCOME FUND, L.P.,
                         as Assignee
                         By: ING Capital Advisors LLC, as Investment Advisor

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         SEQUILS-ING I (HBDGM), LTD., as Assignee
                         By: ING Capital Advisors LLC, as Collateral Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         ATHENA CDO, LIMITED, as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         BEDFORD CDO, LIMITED, as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         CAPTIVA III FINANCE LTD., as a Lender
                         As advised by Pacific Investment Management Company

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         CAPTIVA IV FINANCE LTD., as a Lender
                         As advised by Pacific Investment Management Company

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CATALINA CDO LTD., as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         DELANO COMPANY, as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         ENHANCED BOND INDEX FUND SA31 (ACCT 138), as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor, acting through The Chase Manhattan
                         Bank in the Nominee Name of Atwell & Co.

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         ROYALTON COMPANY, as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         TRIGON HEALTHCARE INC. (ACCT 674), as a Lender
                         By:  Pacific Investment Management Company, as its
                         Investment Advisor, acting through The Bank of New York
                         in the Nominee Name of Hare & Co.

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         BALANCED HIGH YIELD FUND I LTD., as a Lender
                         By: BHF (USA) Capital Corporation
                             Acting as Attorney-in-Fact

                         By: /s/ Heidimarie E. Skor CFA
                             ------------------------------------------------
                             Name:  Heidimarie E. Skor CFA
                                    -----------------------------------------
                             Title: Managing Director, Asset Management
                                    -----------------------------------------

                         By: /s/ Dana L. McDougall
                             ------------------------------------------------
                             Name:  Dana L. McDougall
                                    -----------------------------------------
                             Title: Vice President
                                    -----------------------------------------

                         BALANCED HIGH YIELD FUND II, LTD., as a Lender
                         By: BHF (USA) Capital Corporation
                             Acting as Attorney-in-Fact

                         By: /s/ Heidimarie E. Skor CFA
                             ------------------------------------------------
                             Name:  Heidimarie E. Skor CFA
                                    -----------------------------------------
                             Title: Managing Director, Asset Management
                                    -----------------------------------------

                         By: /s/ Dana L. McDougall
                             ------------------------------------------------
                             Name:  Dana L. McDougall
                                    -----------------------------------------
                             Title: Vice President
                                    -----------------------------------------
<PAGE>

                         BANK OF AMERICA, N.A., as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         BANK OF MONTREAL, as a Lender

                         By: /s/ Sarah Kim
                            -------------------------------------------
                            Name:  Sarah Kim
                                   ------------------------------------
                            Title: Director
                                   ------------------------------------
<PAGE>

                         THE BANK OF NOVA SCOTIA, as a Lender

                         By:  /s/ P.A. Weissenberger
                              -----------------------------------------------
                              Name:  P.A. Weissenberger
                                     ----------------------------------------
                              Title: Authorized Signatory
                                     ----------------------------------------
<PAGE>

                         BANK OF SCOTLAND, as a Lender

                         By: /s/ Joseph Fratus
                             --------------------------------------------
                             Name:  Joseph Fratus
                                    -------------------------------------
                             Title: Vice President
                                    -------------------------------------
<PAGE>

                         BANK UNITED, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         BANKERS TRUST COMPANY, as a Lender

                         By: /s/ Pam Divino
                             ---------------------------------------------
                             Name:  Pam Divino
                                   ---------------------------------------
                             Title: Vice President
                                   ---------------------------------------
<PAGE>

                         BAYERISCHE HYPO- UND VEREINSBANK AG, NEW YORK BRANCH,
                         as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         BEAR STEARNS CORPORATE LENDING INC., as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CARAVELLE INVESTMENT FUND, L.L.C., as a Lender
                         By: Caravelle Advisors L.L.C.

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CARLYLE HIGH YIELD PARTNER II, LTD., as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CITIZENS BANK OF MASSACHUSETTS, as successor to US
                         Trust, as a Lender

                         By: /s/ Daniel G. Eastman
                            ---------------------------------------------
                            Name:  Daniel G. Eastman
                                   --------------------------------------
                            Title: Senior Vice President
                                   --------------------------------------
<PAGE>

                         CITY NATIONAL BANK, as a Lender

                         By: /s/ Patrick M. Drum
                             -----------------------------------------------
                             Name:  Patrick M. Drum
                                    ----------------------------------------
                             Title: Vice President
                                    ----------------------------------------
<PAGE>

                         COBANK, ACB, as a Lender

                         By: /s/ Anita Youngblut
                             ------------------------------------------
                             Name:  Anita Youngblut
                                    -----------------------------------
                             Title: Vice President
                                    -----------------------------------
<PAGE>

                         COOPERATIEVE CENTRALE RAIFFEISEN-BOERENLEENBANK B.A.,
                         "RABOBANK NEDERLAND", NEW YORK BRANCH

                         By:  /s/ Douglas W. Zylstra
                              -----------------------------------------------
                              Name:  Douglas W. Zylstra
                                     ----------------------------------------
                              Title: Senior Vice President
                                     ----------------------------------------

                         By:  /s/ Edward Reyser
                              -----------------------------------------------
                              Name:  Edward Reyser
                                     ----------------------------------------
                              Title: Executive Director
                                     -----------------------------------------
<PAGE>

                         THE CIT GROUP/EQUIPMENT FINANCING, INC., as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CITICORP USA, INC., as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         DEXIA PUBLIC FINANCE BANK-NEW YORK AGENCY (f/k/a CREDIT
                         LOCAL DE FRANCE - NEW YORK
                         AGENCY), as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CREDIT LYONNAIS NEW YORK BRANCH, as a Lender

                         By: /s/ Patrick McCarthy
                             ------------------------------------------
                             Name:  Patrick McCarthy
                                    -----------------------------------
                             Title: Authorized Signature
                                    -----------------------------------
<PAGE>

                         CYPRESSTREE INSTITUTIONAL FUND, LLC, as a Lender
                         By:  CypressTree Investment Management Company, Inc.
                            Its Managing Member

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         CYPRESSTREE INVESTMENT FUND, LLC, as a Lender
                         By: CypressTree Investment Management Company, Inc.,
                         its Managing Member

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         CYPRESSTREE INVESTMENT PARTNERS II, LTD., as a Lender
                         By:  CypressTree Investment Management Company, Inc.,
                         as Portfolio Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         CYPRESSTREE SENIOR FLOATING RATE FUND, as a Lender
                         By: CypressTree Investment Management Company, Inc., as
                         Portfolio Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         NORTH AMERICAN SENIOR FLOATING RATE FUND, as a Lender
                         By: CypressTree Investment Management Company, Inc., as
                         Portfolio Manager

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         NIB Capital Bank N.V., as a Lender

                         By: /s/ Henk L. Huizing
                             ------------------------------------------
                             Name:  Henk L. Huizing
                                    -----------------------------------
                             Title: SVP
                                    -----------------------------------

                         By: /s/ Hans Rijnberg
                             ------------------------------------------
                             Name:  Hans Rijnberg
                                    -----------------------------------
                             Title: Vice President
                                    -----------------------------------
<PAGE>

                         DRESDNER BANK AG, NEW YORK AND GRAND CAYMAN BRANCHES,
                         as a Lender

                         By: /s/ Patrick A. Keleher
                             ----------------------------------------------
                             Name:  Patrick A. Keleher
                                    ---------------------------------------
                             Title: Vice President
                                    ---------------------------------------

                         By: /s/ Michael S. Greenberg
                             ----------------------------------------------
                             Name:  Michael S. Greenberg
                                   ----------------------------------------
                             Title: Assistant Vice President
                                    ---------------------------------------
<PAGE>

                         EATON VANCE CDO III, LTD., as a Lender
                         By:  Eaton Vance Management, as Investment Advisor

                         By: /s/ Scott H. Page
                             --------------------------------------------
                             Name:  Scott H. Page
                                    -------------------------------------
                             Title: Vice President
                                    -------------------------------------

                         EATON VANCE INSTITUTIONAL SENIOR LOAN FUND, as a Lender
                         By:  Eaton Vance Management, as Investment Advisor

                         By: /s/ Scott H. Page
                             -----------------------------------------------
                             Name:  Scott H. Page
                                    -----------------------------------------
                             Title: Vice President
                                    -----------------------------------------

                         EATON VANCE SENIOR INCOME TRUST, as a Lender
                         By:  Eaton Vance Management, as Investment Advisor

                         By: /s/ Scott H. Page
                             --------------------------------------------
                             Name:  Scott H. Page
                                    -------------------------------------
                             Title: Vice President
                                    -------------------------------------

                         OXFORD STRATEGIC INCOME FUND, as a Lender
                         By:  Eaton Vance Management, as Investment Advisor

                         By: /s/ Scott H. Page
                             ---------------------------------------------
                             Name:  Scott H. Page
                                    --------------------------------------
                             Title: Vice President
                                    --------------------------------------
<PAGE>

                         SENIOR DEBT PORTFOLIO, as a Lender
                         By:  Boston Management and Research, as Investment
                         Advisor

                         By: /s/ Scott H. Page
                             ---------------------------------------------
                             Name:  Scott H. Page
                                    --------------------------------------
                             Title: Vice President
                                    --------------------------------------
<PAGE>

                         ERSTE BANK DER OESTERREICHISCHEN
                         SPARKASSEN AG, as a Lender

                         By: /s/ John Fay
                             ----------------------------------------------
                             Name:  John Fay
                                    ---------------------------------------
                             Title: Assistant Vice President
                                    ---------------------------------------
                                    Erste Bank New York Branch

                         By: /s/ Rima Terradista
                             ----------------------------------------------
                             Name:  Rima Terradists
                                    ---------------------------------------
                             Title: Vice President
                                    ---------------------------------------
<PAGE>

                         FC-CBO II LIMITED, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         FIDELITY ADVISOR SERIES II: FIDELITY ADVISOR HIGH
                         INCOME FUND, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         VARIABLE INSURANCE PRODUCTS FUND II: ASSET MANAGER
                         PORTFOLIO, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________

                         VARIABLE INSURANCE PRODUCTS FUND II: ASSET MANAGER
                         GROWTH PORTFOLIO, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         FIRST DOMINION FUNDING III, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         FIRST UNION NATIONAL BANK, as a Lender

                         By: /s/ Bruce W. Loftin
                             ------------------------------------------
                             Name:  Bruce W. Loftin
                                    -----------------------------------
                             Title: Senior Vice President
                                    -----------------------------------
<PAGE>

                         FLEET NATIONAL BANK, as a Lender

                         By: /s/ Ellery (Tim) Willard
                             -----------------------------------------
                             Name: Ellery (Tim) Willard
                                   -----------------------------------
                            Title: Vice President
                                   -----------------------------------
<PAGE>

                         FRANKLIN FLOATING RATE TRUST, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                         THE FUJI BANK, LIMITED, as a Lender

                         By:__________________________________________
                             Name: ___________________________________
                             Title:___________________________________
<PAGE>

                            GALAXY CLO 1999-1, LTD., as a Lender
                            By: SAI Investment Adviser, Inc.,
                            its Collateral Agent

                            By:___________________________________________
                               Name:______________________________________
                               Title:_____________________________________
<PAGE>

                            GENERAL ELECTRIC CAPITAL CORPORATION, as a Lender

                            By: /s/ Brian P. Ward
                                ------------------------------------------
                                Name:  Brian P. Ward
                                     -------------------------------------
                                Title: Manager - Operations
                                      ------------------------------------
<PAGE>

                            HOWARD BANK, N.A., as a Lender

                            By: /s/ Michael W. Quinn
                               -------------------------------------------
                            Name:  Michael W. Quinn
                                 -----------------------------------------
                            Title: Sr. Vice President
                                  ----------------------------------------
<PAGE>

                            IBM CREDIT CORPORATION, as a Lender

                            By:___________________________________________
                               Name:______________________________________
                               Title:_____________________________________
<PAGE>

                            KEMPER FLOATING RATE FUND, as a Lender

                            By:___________________________________________
                               Name:______________________________________
                               Title:_____________________________________
<PAGE>

                            KEY CORPORATE CAPITAL INC., as a Lender

                            By: /s/ Amy Ciano
                               -------------------------------------------
                               Name: Amy Ciano
                                    --------------------------------------
                               Title: Vice President
                                     -------------------------------------
<PAGE>

                            KZH CYPRESSTREE-1 LLC, as a Lender

                            By:___________________________________________
                               Name:______________________________________
                               Title:_____________________________________

                            KZH ING-1 LLC, as a Lender

                            By:  /s/ Susan Lee
                               -------------------------------------------
                               Name: Susan Lee
                                    --------------------------------------
                               Title: Authorized Agent
                                     -------------------------------------

                            KZH ING-2 LLC, as a Lender

                            By: /s/ Susan Lee
                               -------------------------------------------
                               Name:  Susan Lee
                                    --------------------------------------
                               Title:  Authorized Agent
                                     -------------------------------------

                            KZH ING-3 LLC, as a Lender

                            By: /s/ Susan Lee
                               -------------------------------------------
                               Name:  Susan Lee
                                    --------------------------------------
                               Title: Authorized Agent
                                     -------------------------------------

                            KZH LANGDALE LLC, as a Lender

                            By: /s/ Susan Lee
                               -------------------------------------------
                               Name: Susan Lee
                                     -------------------------------------
                               Title:  Authorized Agent
                                       -----------------------------------
<PAGE>

                            KZH RIVERSIDE LLC, as a Lender

                            By:___________________________________________
                               Name:______________________________________
                               Title:_____________________________________

                            KZH SHOSHONE LLC, as a Lender

                            By: /s/ Susan Lee
                               -------------------------------------------
                               Name:  Susan Lee
                                    --------------------------------------
                               Title:  Authorized Agent
                                     -------------------------------------

                            KZH SOLEIL-2 LLC, as a Lender

                            By:___________________________________________
                               Name:______________________________________
                               Title:_____________________________________
<PAGE>

                            LEHMAN COMMERCIAL PAPER INC., as a Lender

                            By: /s/ G. Andrew Keith
                               -------------------------------------------
                               Name:  G. Andrew Keith
                                    --------------------------------------
                               Title:  Authorized Signatory
                                     -------------------------------------
<PAGE>

                            LIBERTY-STEIN ROE ADVISOR FLOATING RATE
                            ADVANTAGE FUND, as a Lender
                            By:   Stein Roe & Farnham Incorporated, As Advisor

                            By: /s/ Brian W. Good
                               -------------------------------------------------
                               Name:  Brian W. Good
                                    --------------------------------------------
                               Title:  Sr. Vice President & Portfolio Manager
                                     -------------------------------------------
<PAGE>

                            MERRILL LYNCH GLOBAL INVESTMENT SERIES: INCOME
                            STRATEGIES PORTFOLIO, as a Lender
                            By: Merrill Lynch Investment Managers, L.P., as
                                Investment Advisor

                            By: /s/ Joseph Matteo
                               ---------------------------------------------
                               Name: Joseph Matteo
                                    ----------------------------------------
                               Title:  Authorized Signatory
                                     ----------------------------------------

                            MERRILL LYNCH PRIME RATE PORTFOLIO, as a Lender
                            By:  Merrill Lynch Investment Managers, L.P., as
                               Investment Advisor

                            By: /s/ Joseph Matteo
                               -----------------------------------------------
                               Name: Joseph Matteo
                                    ------------------------------------------
                               Title: Authorized Signatory
                                      ----------------------------------------

                            MASTER SENIOR FLOATING RATE TRUST, as a Lender

                            By: /s/ Joseph Matteo
                               -----------------------------------------------
                               Name: Joseph Matteo
                                    ------------------------------------------
                               Title: Authorized Signatory
                                     -----------------------------------------

                            MERRILL LYNCH SENIOR FLOATING RATE FUND, INC., as a
                            Lender

                            By: /s/ Joseph Matteo
                              ------------------------------------------------
                               Name:  Joseph Matteo
                                    ------------------------------------------
                               Title:  Authorized Signatory
                                     -----------------------------------------
<PAGE>

                         SENIOR HIGH INCOME PORTFOLIO, INC., as a Lender

                         By: /s/ Joseph Matteo
                            --------------------------------------------------
                            Name: Joseph Matteo
                                 ---------------------------------------------
                            Title: Authorized Signatory
                                  --------------------------------------------

                         DEBT STRATEGIES FUND, INC., as a Lender

                         By: /s/ Joseph Matteo
                            --------------------------------------------------
                            Name: Joseph Matteo
                                 ---------------------------------------------
                            Title: Authorized Signatory
                                  --------------------------------------------

                         DEBT STRATEGIES FUND II, INC., as a Lender

                         By: /s/ Joseph Matteo
                            --------------------------------------------------
                            Name: Joseph Matteo
                                 ---------------------------------------------
                            Title: Authorized Signatory
                                  --------------------------------------------

                         DEBT STRATEGIES FUND III, INC., as a Lender

                         By: /s/ Joseph Matteo
                            --------------------------------------------------
                            Name: Joseph Matteo
                                 ---------------------------------------------
                            Title: Authorized Signatory
                                  --------------------------------------------

                         LONGHORN CDO (CAYMAN) LTD., as a Lender
                         By:  Merrill Lynch Asset Management, L.P., as Attorney
                         In Fact

                         By: /s/ Joseph Matteo
                            --------------------------------------------------
                            Name: Joseph Matteo
                                 ---------------------------------------------
                            Title: Authorized Signatory
                                 ---------------------------------------------
<PAGE>

                         METROPOLITAN LIFE INSURANCE COMPANY, as a Lender

                         By: /s/ James R. Dingler
                            --------------------------------------------------
                            Name: James R. Dingler
                                 ---------------------------------------------
                            Title: Director
                                  --------------------------------------------
<PAGE>

                         THE MITSUBISHI TRUST AND BANKING CORPORATION, as a
                         Lender

                         By: /s/ Toshihiro Hayashi
                            --------------------------------------------
                            Name:  Toshihiro Hayashi
                                 ---------------------------------------
                            Title: Senior Vice President
                                  --------------------------------------
<PAGE>

                         MONY LIFE INSURANCE COMPANY, as a Lender

                         By:__________________________________________
                            Name:_____________________________________
                            Title:____________________________________
<PAGE>

                         MORGAN STANLEY DEAN WITTER PRIME INCOME
                         TRUST, as a Lender

                         By: /s/ Sheila Finnerty
                            ------------------------------------------
                            Name: Sheila Finnerty
                                 -------------------------------------
                            Title: Sr. Vice President
                                  ------------------------------------
<PAGE>

                         MOUNTAIN CAPITAL CLO I, LTD., as a Lender

                         By:____________________________________________
                            Name:_______________________________________
                            Title:______________________________________
<PAGE>

                         MUIRFIELD TRADING LLC, as a Lender

                         By: /s/ Ann E. Morris
                            -----------------------------------------------
                            Name: Ann E. Morris
                                 ------------------------------------------
                            Title: Asst. Vice President
                                  -----------------------------------------

                         OLYMPIC FUNDING TRUST, SERIES 1999-1, as a Lender

                         By: /s/ Ann E. Morris
                            -----------------------------------------------
                            Name: Ann E. Morris
                                 ------------------------------------------
                            Title: Authorized Agent
                                  -----------------------------------------

                         PPM SPYGLASS FUNDING TRUST, as a Lender

                         By:_______________________________________________
                            Name:__________________________________________
                            Title:_________________________________________

                         WINGED FOOT FUNDING TRUST, as a Lender

                         By: /s/ Ann E. Morris
                            -----------------------------------------------
                            Name: Ann E. Morris
                                 ------------------------------------------
                            Title:  Authorized Agent
                                  -----------------------------------------
<PAGE>

                         NATEXIS BANQUES POPULAIRES, as a Lender

                         By:____________________________________________
                            Name:_______________________________________
                            Title:______________________________________

<PAGE>

                         NATIONAL CITY BANK, as a Lender

                         By:____________________________________________
                            Name:_______________________________________
                            Title:______________________________________
<PAGE>

                         OCTAGON INVESTMENT PARTNERS II, LLC, as a Lender
                         By:  Octagon Credit Investors, LLC, as sub-investment
                         manager

                         By:___________________________________________________
                            Name:______________________________________________
                            Title:_____________________________________________

                         OCTAGON INVESTMENT PARTNERS III, LTD., as a Lender
                         By:  Octagon Credit Investors, LLC, as Portfolio
                         Manager

                         By:___________________________________________________
                            Name:______________________________________________
                            Title:_____________________________________________
<PAGE>

                         OPPENHEIMER SENIOR FLOATING RATE FUND, as a Lender

                         By:___________________________________________________
                            Name:______________________________________________
                            Title:_____________________________________________
<PAGE>

                         ML CLO XV PILGRIM AMERICA (CAYMAN) LTD., as a Lender
                         By:  Pilgrim Investments, Inc., as its investment
                         manager

                         By: /s/ Jeffrey A. Bakalar
                            ----------------------------------------------------
                            Name: Jeffrey A. Bakalar
                                 -----------------------------------------------
                            Title:  Senior Vice President
                                  ----------------------------------------------

                         ML CLO XX PILGRIM AMERICA (CAYMAN) LTD., as a Lender
                         By:  Pilgrim Investments, Inc., as its investment
                         manager

                         By: /s/ Jeffrey A. Bakalar
                            ----------------------------------------------------
                            Name: Jeffrey A. Bakalar
                                 -----------------------------------------------
                            Title: Senior Vice President
                                  ----------------------------------------------

                         PILGRIM CLO 1999-1 LTD., as a Lender
                         By:  Pilgrim Investments, Inc., as its investment
                         manager

                         By: /s/ Jeffrey A. Bakalar
                            ----------------------------------------------------
                            Name: Jeffrey A. Bakalar
                                 -----------------------------------------------
                            Title:  Senior Vice President
                                  ----------------------------------------------
<PAGE>

                         PILGRIM PRIME RATE TRUST, as a Lender
                         By:  Pilgrim Investments, Inc., as its investment
                         manager

                         By: /s/ Jeffrey A. Bakalar
                            ----------------------------------------------------
                            Name: Jeffrey A. Bakalar
                                 -----------------------------------------------
                            Title: Senior Vice President
                                  ----------------------------------------------

                         SEQUILS-PILGRIM 1, LTD., as a Lender
                         By:  Pilgrim Investments, Inc., as its investment
                         manager

                         By: /s/ Jeffrey A. Bakalar
                            ----------------------------------------------------
                            Name: Jeffrey A. Bakalar
                                 -----------------------------------------------
                            Title: Senior Vice President
                                  ----------------------------------------------
<PAGE>

                         PNC BANK, NATIONAL ASSOCIATION, as a Lender

                         By: /s/ Keith R. White
                            ----------------------------------------------------
                            Name: Keith R. White
                                ------------------------------------------------
                            Title: Vice President
                                  ----------------------------------------------
<PAGE>

                         PUTNAM HIGH YIELD TRUST, as a Lender

                         By:____________________________________________
                            Name:_______________________________________
                            Title:______________________________________
<PAGE>

                         ROYAL BANK OF CANADA, as a Lender

                         By:____________________________________________
                            Name:_______________________________________
                            Title:______________________________________
<PAGE>

                         SANKATY HIGH YIELD PARTNERS II, L.P., as a Lender

                         By: /s/ Diane J. Exter
                            ---------------------------------------------------
                            Name: Diane J. Exter
                                 ----------------------------------------------
                            Title: Executive Vice President
                                  ---------------------------------------------
                                   Portfolio Manager

                         Sankaty Advisors, Inc. as Collateral
                         Manager for GREAT POINT CLO
                         1999-1 LTD., as Term Lender

                         By: /s/ Diane J. Exter
                            ---------------------------------------------------
                            Name: Diane J. Exter
                                 ----------------------------------------------
                            Title: Executive Vice President
                                  ---------------------------------------------
                                   Portfolio Manager
<PAGE>

                         SUNTRUST BANK, as a Lender

                         By:____________________________________________
                            Name:_______________________________________
                            Title:______________________________________
<PAGE>

                         TEXTRON FINANCIAL CORPORATION, as a Lender

                         By: /s/ Stuart Schulman
                            ----------------------------------------------------
                            Name:  Stuart Schulman
                                 -----------------------------------------------
                            Title: Managing Director
                                  ----------------------------------------------
<PAGE>

                         UNION BANK OF CALIFORNIA, N.A., as a Lender

                         By: /s/ Stender E. Sweeney II
                            ---------------------------------------------------
                            Name:  Stender E. Sweeney II
                                 ----------------------------------------------
                            Title: Vice President
                                  ---------------------------------------------
<PAGE>

                         VAN KAMPEN SENIOR INCOME TRUST, as a Lender
                         By: Van Kampen Investment Advisory Corp.

                         By: /s/ Darvin D. Pierce
                            ---------------------------------------------------
                            Name:  Darvin D. Pierce
                                 ----------------------------------------------
                            Title: Vice President
                                  ---------------------------------------------
<PAGE>

                         WEBSTER BANK, as a Lender

                         By: /s/ Paul T. Savino
                            --------------------------------------------------
                            Name: Paul T. Savino
                                 ---------------------------------------------
                            Title: Vice President
                                  --------------------------------------------

Source: [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}, [{"source": "alea-institute/alea-institute/kl3m-data-edgar-agreements/train-00017-of-00352.parquet"}]]