U.S. Army Soldiers with the 4th Infantry Division, board a C-17 Globemaster III at Prince Sultan Air Base (PSAB), Kingdom of Saudi Arabia (KSA), October 23, 2109. The U.S. is partnering with the KSA in PSAB to enhance operational flexibility while maintaining security and stability in the region. (U.S. Air Force photo by Senior Airman Alexandra Minor)