Airman 1st Class Chelsea Shields, 28th Logistics Readiness Squadron traffic management technician, opens a crate at the Packing and Crating Receiving Center on Ellsworth Air Force Base, S.D. Aug. 8, 2013. Packing and Crating receives multiple shipments a day which aids in supplying maintenance Airmen with the parts they need to keep the B-1 bombers mission ready. (U.S. Air Force photo by Airman 1st Class Rebecca Imwalle/Released)