From left, Air Force Airman 1st Class Michael Brown,

From left, Air Force Airman 1st Class Michael Brown, Staff Sgt. Nick Douglas, and Senior Airman Karla Orduna, aircraft armament systems technicians with 34th Aircraft Maintenance Unit, inspect ammunitions for defects before loading onto a B-1 Lancer during Exercise Valiant Shield 16 at Andersen Air Force Base, Guam, Sept. 16, 2016. Aircraft armament systems technicians maintain weapons through the process of unloading and loading ammunition onto aircraft to ensure operational readiness. VS16 is a biennial, U.S.-only, field training exercise that focuses on joint training with U.S. Navy, Marine Corps, and Air Force to increase interoperability and working relationships. (U.S. Marine Corps photo by Lance Cpl. Makenzie Fallon)