A U.S. Air Force C-17 Globemaster III loadmaster assigned to the 816th Expeditionary Airlift Squadron performs engine start checks at Al Udeid Air Base, Qatar, Jan. 10, 2020. The 816th EAS, deployed with U.S. Air Forces Central Command, is responsible for delivering cargo and passengers to U.S. and coalition forces' bases, enabling a constant presence in the area of responsibility. (U.S. Air Force photo by Senior Airman Brandon Cribelar)