PGI 217.502-1 General.
(a) Written agreement on responsibility for management and administration—
(1) Assisted acquisitions. When the contracting activity of one DoD Component provides acquisition assistance to deployed units or personnel from another DoD Component—
(A) The written interagency agreement between the servicing DoD Component and the requesting DoD Component, required by FAR 17.502-1(a)(1), shall be documented on the FS Form 7600A, United States Government Interagency Agreement (see template at https://www.fiscal.treasury.gov/files/forms/form-7600a.pdf );
(B) Procurement support should be on a nonreimbursable basis, unless the parties mutually agree, in writing, for reimbursable support; and
(C) The DD Form 448, Military Interdepartmental Purchase Request (MIPR), shall be used to provide a description of the supplies/services and certification of funds available to support the requirement.