Keywords: US Navy 110212-N-8720O-008 Navy Diver 1st Class Colin Johnston, assigned to Mobile Diving and Salvage Unit (MDSU) 1, completes a 50-foot training d.jpg en SAN DIEGO Feb 12 2011 Navy Diver 1st Class Colin Johnston assigned to Mobile Diving and Salvage Unit MDSU 1 completes a 50-foot training dive aboard the Military Sealift Command rescue and salvage ship USNS Salvor T-ARS 52 at Naval Air Station North Island MDSU-1 is undergoing an intensive training period in preparation for an upcoming deployment to the U S 7th Fleet area of responsibility U S Navy photo by Mass Communication Specialist 2nd Class Chris Okula/Released 2011-02-12 110212-N-8720O-008 Navy http //www navy mil/view_image asp id 97563 U S Navy photo by Mass Communication Specialist 2nd Class Chris Okula PD-USGov-Military-Navy Aboard USNS Salvor T-ARS-52 Naval Air Station North Island in the 2010s Mobile Diving and Salvage Unit 1 United States Navy Divers |