U.S. Air Force Senior Airman Virgil Campbell, 366th Component Maintenance Squadron aircraft maintenance fuels systems journeyman, lowers an F-15E Strike Eagle external fuel tank using the Vertical Tank Storage System at Mountain Home Air Force Base, Idaho, Oct. 27, 2011. The $2.5 million VTSS stores more than 240 tanks, which were previously stored on a cement pad outdoors. The new equipment has cut down load and unload time from about an hour to less than five minutes. (U.S. Air Force photo by Senior Airman Alyssa C. Wallace/Released)