Routine checkup
Staff Sgt. Lee Falder performs a routine check on a B-1 Lancer during an operational readiness inspection at Ellsworth Air Force Base, S.D., on July 18. Pre-checks include avionics, control surfaces and engine runs. Sergeant Falder is assigned to the 28th Aircraft Maintenance Squadron. (U.S. Air Force photo/Airman 1st Class Melissa Flores)