AMENDMENT NO. 1 TO REVOLVING LOAN AND SECURITY AGREEMENT
Amendment No. 1 ("Amendment") dated as of February 14, 2002 to Revolving Loan and Security Agreement
dated as of November 30, 2000 between AMERICAN SCIENCE AND ENGINEERING, INC., a
Massachusetts corporation ("Borrower") and HSBC BANK USA, a bank organized under the laws of the State
of New York ("Bank").
W I T N E S S E T H:
WHEREAS, Borrower has heretofore entered into financing arrangements with Bank pursuant to the terms and
conditions of an Revolving Loan and Security Agreement dated as of November 30, 2000 between Bank and
Borrower (as amended, the "Credit Agreement") and the Financing Agreements (as defined in the Credit
WHEREAS, Borrower has requested and Bank is willing, subject to the terms and conditions hereof, to amend
the Credit Agreement to, among other things, increase the commitment thereunder.
NOW, THEREFORE, in consideration of the foregoing premises, the mutual covenants and agreements
contained herein and other good and valuable consideration, the receipt and sufficiency of which is
acknowledged, Borrower and Bank mutually covenant, warrant and agree as follows:
SECTION 1. DEFINITIONS.
SECTION 1.1 INTERPRETATION. For purposes of this Amendment, unless otherwise defined herein, all
capitalized terms used herein including, but not limited to, those capitalized terms used and/or defined in the
recitals hereto, shall have the respective meanings assigned to such terms in the Credit Agreement.
SECTION 2. AMENDMENT.
SECTION 2.1 AMENDMENT TO SECTION 1.1
(a) The definition of the term "Commitment" in the Credit Agreement is amended by deleting the reference to
"$10,000,000.00" contained therein and replacing it with "$20,000,000.00".
(b) The definition of "Commitment Amount" in the Credit Agreement is amended by deleting the reference to
"TEN MILLION AND 00/100 ($10,000,000.00) DOLLARS" contained therein and replacing it with
(c) The definition of "Financing