Members of a Defense POW/MIA Accountability Agency (DPAA) underwater recovery team clean a recovered piece of wreckage on a barge in the Gulf of Tonkin off the coast of Northern Vietnam, May 24, 2015. The underwater recovery team is searching for two aviators who are believed to have crashed in the area during the Vietnam War. Divers from Mobile Diving and Salvage Unit ONE dredge the ocean floor, and members of the joint recovery team sift through the dredged sediment in search of identifying evidence. (U.S. Navy photo by Mass Communication Specialist 1st Class Brett Cote/RELEASED)