U.S. Air Force Master Sgt. Joseph Trumble, 51st Logistics Readiness Squadron flight service section chief stands with a Prisoners of War Missing in Action guidon as part of a 24-hour uniformed vigil at Osan Air Base, Republic of Korea, Sept. 13, 2017. It’s National POW/MIA week at Osan Air Base. Several events were held throughout the week in honor of all POW/MIA members, leading up to National POW/MIA Remembrance Day, Sept. 15, 2017 (U.S. Air Force photo by Airman 1st Gwendalyn Smith)