150527-N-TI693-082 PANAMA CITY, Fla. (May 27, 2015) Secretary of the Navy (SECNAV) Ray Mabus presents an award to Gunnery Sgt. Bo Irving, a Marine Corps combatant diver course instructor, in the aquatic training facility at Naval Diving and Salvage Training Center. NDSTC is the largest diving training facility in the world and is home of the military diver. (U.S. Navy photo by Mass Communication Specialist Fred Gray IV/Released)