Fire Controlman Chief Sean Cartney signals the final count of a Close In Weapons System (CIWS) 20mm phalanx gatling gun, during a live fire exercise.
Pacific Ocean (Jan. 22, 2007) Fire Controlman Chief Sean Cartney signals the final count of a Close In Weapons System (CIWS) 20mm phalanx gatling gun, during a live fire exercise on the fantail of the Nimitz-class aircraft carrier USS John C. Stennis (CVN 74). Stennis is conducting carrier qualifications (CQ) off the coast of Southern California prior to steaming west to bolster security in U.S. Central Command area of operations. U.S. Navy photo by Mass Communication Specialist 3rd Class Paul J. Perkins File# 070122-N-2659P-089
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.