Irma Mission Air Force pilots take off in a C-17 Globemaster III in San Juan, Puerto Rico, Sept. 6, 2017, after a mission to prepare for Hurricane Irma. The category 5 storm can inflict catastrophic damage. Air Force photo by Staff Sgt. Douglas Ellis SHARE: Download: Full Size (1.05 MB) Credit: Staff Sgt. Douglas Ellis VIRIN: 170906-F-MY676-0941C.JPG Photo Gallery