Sergeant Stephanie Hume, Alpha Battery, 2nd Battalion, 1st Air Defense Artillery patriot missile maintainer, calls the command post after receiving a dropped missile canister inject during a quarterly field training exercise at Kunsan Air Base, Republic of Korea, Feb. 11, 2015. Although Patriot Missile maintainers complete semiannual reload evaluations, simulating a canister drop was a surprise inject during the FTX. (U.S. Air Force photo by Senior Airman Katrina Heikkinen/Released)