Navy Diver 2nd Class Allen Dewitt, center, prepares to enter a decompression chamber after completing a dive on Feb. 14, 2013. Navy divers from the Mobile Diving Salvage Unit 2, Company 4, performed deep sea salvage operations from the salvage vessel USNS Grapple (T-ARS 53) to help find wreckage from an F-16 Fighting Falcon which crashed in the Adriatic Sea, Jan. 28. (U.S. Air Force photo by Staff Sgt. Evelyn Chavez/Released)