U.S. Air Force Staff Sgt. David Valine, 435th Contingency Response Squadron landing zone safety officer, provides control support for Airmen deployed in support of Aviation Rotation 19-3 at Powidz Air Base, Poland, July 20, 2019. Landing zone safety officers set up landing strips, communicate with incoming aircraft, and ensure the integrity of the landing area for a safe arrival of aircraft. (U.S. Air Force photo by Staff Sgt. Jimmie D. Pike)