151204-M-HX747-021 THANH HOA, Vietnam (Dec. 4, 2015) U.S. Army Sgt. Aaron Korkki, Defense POW/MIA Accounting Agency (DPAA), (right) gives a sandbag to U.S. Army Staff Sgt. Jose Ruiz, DPAA, Dec. 4, 2015, in Attapeu Province, Laos, during search and recovery efforts to retrieve two U.S. Army soldiers who went down with a Grumman OV-1 Mohawk in 1966. DPAA conducts global search, recovery, and laboratory operations to identify unaccounted-for Americans from past conflicts. (DoD photo by Cpl. John Tran/Released)