Keeping the B-1 put together
Airman 1st Class Justin Stoney, an Individual Protective Equipment technician assigned to the 28th Logistics Readiness Squadron, tests the seal of a gas mask at Ellsworth Air Force Base S.D., Dec. 6, 2016. Stoney is responsible for maintaining gas masks, which includes sanitizing them when they are turned in, testing them before they are issued and inspecting them periodically to ensure their readiness. (U.S. Air Force photo by Airman 1st Class James L. Miller)