The United States Coast Guard (USCG) is the maritime security, search and rescue, and law enforcement service branch of the United States Armed Forces. As of 2018, the Coast Guard had 40,992 active duty personnel, 7,000 reservists, 8,577 full-time civilian employees, and 31,000 auxiliary members for a total workforce of 87,569. The Coast Guard maintains an extensive fleet of 243 coastal and ocean-going patrol ships, tenders, tugs, icebreakers, and 1,650 smaller boats, as well as an aviation division consisting of 201 helicopters and fixed-wing aircraft.
Military transport aircraft or military cargo aircraft are used to airlift troops, weapons and other military equipment to support military operations. Transport aircraft can be used for both strategic and tactical missions, and are often diverted to civil emergency relief missions.
A maritime patrol aircraft (MPA), also known as a patrol aircraft, maritime reconnaissance aircraft, is a fixed-wing aircraft designed to operate for long durations over water in maritime patrol roles — in particular anti-submarine warfare (ASW), anti-ship warfare (AShW), and search and rescue (SAR).