The head of each department, agency, or instrumentality of the Federal Government is authorized-
(1) to cooperate with the head of the designated department or agency with respect to determining the manner in which and the extent to which the United States shall be a participant in and an exhibitor at Interama; and
(2) to make available to the head of the designated department or agency, on a reimbursable basis, such personnel as may be necessary to assist him in carrying out his functions under this chapter.
(