Airman 1st Class Barney Lopez, 28th Logistics Readiness Squadron receiving technician, unloads deliveries at Ellsworth Air Force Base, S.D., Sept. 1, 2015. Shipments of mission critical parts must be processed and delivered to the appropriate maintenance shop within a strict time frame to ensure that maintenance Airmen have what they need to sustain mission readiness at all times. (U.S. Air Force photo by Senior Airman Rebecca Imwalle/Released)