10 U.S.C. § 655
- Secretary concerned
- The term "Secretary concerned" means-(A) the Secretary of the Army, with respect to matters concerning the Army;(B) the Secretary of the Navy, with respect to matters concerning the Navy, the Marine Corps, and the Coast Guard when it is operating as a service in the Department of the Navy;(C) the Secretary of the Air Force, with respect to matters concerning the Air Force and the Space Force; and(D) the Secretary of Homeland Security, with respect to matters concerning the Coast Guard when it is not operating as a service in the Department of the Navy.
- armed forces
- The term "armed forces" means the Army, Navy, Air Force, Marine Corps, Space Force, and Coast Guard.
- contingency operation
- The term "contingency operation" means a military operation that-(A) is designated by the Secretary of Defense as an operation in which members of the armed forces are or may become involved in military actions, operations, or hostilities against an enemy of the United States or against an opposing military force; or(B) results in the call or order to, or retention on, active duty of members of the uniformed services under section 688, 12301(a), 12302, 12304, 12304a, 12305, or 12406 of this title, chapter 13 of this title, section 3713 of title 14, or any other provision of law during a war or during a national emergency declared by the President or Congress.