U.S. Air Force Airmen assigned to the 121st Fighter Squadron, 113th Wing, District of Columbia, Air National Guard, prepare F-16C Fighting Falcons for takeoff at Lask Air Base, Poland, September 20, 2019. The Airmen and F-16s conducted bilateral training alongside their Polish allies to strengthen their deterrence efforts and adaptive abilities by improving readiness and responsiveness. (U.S. Air Force photo by Airman 1st Class Kyle Cope)