Joe Griffin (top left), senior archeologist for the U.S. Army Corps of Engineers, observes as members of his team from the Defense POW/MIA Accounting Agency collect soil samples to be examined during site excavation in the Xiangkhoang Province, Lao People’s Democratic Republic. Members of the DPAA deployed to the area in hopes of recovering the remains of a pilot unaccounted for since the Vietnam War era. (DoD photo by Staff Sgt. Jocelyn Ford, USAF/RELEASED)