U.S. Air Force Staff Sgt. Dillon Brandon, crew chief,155th Air Refueling Wing, Lincoln Air National Guard Base, Neb., signals hold brakes to a KC-135 Stratotanker at Orland Air Base, Norway, May 29, 2019. The KC-135 and Airmen are supporting Arctic Challenge Exercise 19, a Nordic aviation exercise intended to provide scenario-based training to prepare partner forces for enemy defensive systems. (U.S. Air National Guard photo by Staff Sgt. Kenneth Shaner Brown).