USN Navy (USN) Sailors assigned to Hose Team A ship's repair locker, combat a controlled fire burning on the Mobile Aircraft Firefighting Training Device (MAFTD), on the flight deck of the USN Aircraft Carrier, USS JOHN F. KENNEDY (CV 67). This is the first time the MAFTD has embarked aboard the Carrier. The KENNEDY is underway in the Atlantic Ocean conducting crew proficiency training

Aircraft carriers are warships that act as airbases for carrier-based aircraft. In the United States Navy, these consist of ships commissioned with hull classification symbols CV (aircraft carrier), CVA (attack aircraft carrier), CVB (large aircraft carrier), CVL (light aircraft carrier), CVN (aircraft carrier (nuclear propulsion) and CVAN (attack aircraft carrier (nuclear propulsion). The first aircraft carrier commissioned into the United States Navy was USS Langley (CV-1) on 20 March 1922.