U.S. Air Force Capt. Justin Poole, 21st Airlift Squadron pilot, runs a pre-flight checklist on a C-17 Globemaster III May 19, 2019, at Rota Naval Air Station, Spain. The C-17 is capable of rapid strategic delivery of troops and cargo anywhere in the world. (U.S. Air Force photo by 2nd Lt. R. Michael Longoria)