11th Wing Security Forces Group Airmen run a timed two-mile run during the Defender Challenge 2020 tryouts at Joint Base Andrews, Md., Feb. 27, 2020. The defenders competed for the opportunity to represent the Air Force District of Washington in DC2020 at Camp Bullis, San Antonio, Texas. The challenge will give the Air Force and partnering allies such as the Royal Air Force, the German Luftwaffe, the Royal Australian Air Force and the Royal Canadian Air Force a way to showcase their military police capabilities and joint interoperability. (U.S. Air Force photo by Staff Sgt. Andrew Walck)