The U.S. and POW/MIA flags fly on the base flagpole in front of the 28th Bomb Wing Headquarters building at Ellsworth Air Force Base, S.D., Sept. 20, 2012. Ellsworth will conduct a retreat at the base flagpole Sept. 20, as part of POW/MIA Day. (U.S. Air Force photo by Airman 1st Class Zachary Hada/Released)