U.S. Air Force Staff Sgt. John Swope, a mountaineer

U.S. Air Force Staff Sgt. John Swope, a mountaineer assigned to Defense POW/MIA Accounting Agency (DPAA), sets up a zipline during an investigative recovery mission in Sekong Province, Laos Democratic People’s Republic, Nov. 19, 2019. Investigative teams use several mountaineering techniques to navigate steep mountain terrain while searching fort the remains of missing U.S. service members. DPAA’s mission is to provide the fullest possible accounting of missing personnel to their families and the nation. (U.S. Navy Photo by Mass Communication Specialist 1st Class Tyler Thompson)