Aviation Ordnancemen train on a 50-caliber machine gun on the fantail of USS Kitty Hawk. The training is necessary to familiarize personnel with the weapons as well as to refine procedures for the protection of the ship. Kitty Hawk is the Navy?s only permanently forward-deployed aircraft carrier and operates out of Yokosuka, Japan. U.S. Navy photo by Photographer?s Mate 3rd Class Todd Frantom.