Tightening Chains An airman tightens several chains securing vehicles and four supplies aboard a C-17 Globemaster III at Travis Air Force Base, Calif., Sept. 7, 2017. Air Force photo by Senior Airman Amber Carter SHARE IMAGE: Download Image: Full Size (1.81 MB) Tags: HURRICANE IRMA, AIR FORCE, Airmen Photo By: Senior Airman Amber Carter VIRIN: 170907-F-OT558-0003A.JPG Photo Gallery