170520-M-TT233-014 VIETNAM (May 20, 2017) Explosive Ordnance Disposal Technician 1st Class Scott Carlson digs for metallic signatures during the Defense POW/MIA Accounting Agency's (DPAA) recovery efforts in Quang Tri Province, Vietnam. DPAA team members deployed to the area in hopes of recovering the remains of two U.S. Marines unaccounted for during the 77 day siege of Khe Sanh in 1968. (U.S. Marine Corps photo by Cpl. Julian Temblador/Released)