Home > Browse > Title 10 > Chapter 645 Title 10, Chapter 645 Armed Forces — 4 sections § 7521 Section 7521 - Repealed. Pub. L. 103–355, title II , § 2001(j)(1), Oct. 13, 1994 , 108 Stat. 3303 ] § 7522 Section 7522 - Contracts for research § 7523 Section 7523 - Tolls and fares: payment or reimbursement § 7524 Section 7524 - Marine mammals: use for national defense purposes