Transportation assets that are: a. Assigned to a Military Department for functions of the Secretaries of the Military Departments set forth in Title 10 of the United States Code, Sections 3013(b), 5013(b), and 8013(b), including administrative functions (such as motor pools), intelligence functions, training functions, and maintenance functions; b. Assigned to the Department of the Army for the execution of the missions of the Army Corps of Engineers; c. Assigned to the Department of the Navy as the special mission support force of missile range instrumentation ships, ocean survey ships, cable ships, oceanographic research ships, acoustic research ships, and naval test support ships; the naval fleet auxiliary force of fleet ammunition ships, fleet stores ships, fleet ocean tugs, and fleet oilers; hospital ships; and Navy-unique fleet essential airlift aircraft to provide delivery of passengers and/or cargo from forward Air Mobility Command channel hubs to mobile fleet units; Marine Corps intermediate maintenance activity ships, Marine Corps helicopter support to senior federal officials; and, prior to the complete discharge of cargo, maritime pre-positioning ships; d. Assigned to the Department of the Air Force for search and rescue, weather reconnaissance, audiovisual services, and aeromedical evacuation functions, and transportation of senior federal officials.