Airman 1st Class Ian Boutwell, 22nd Logistics Readiness Squadron vehicle maintenance apprentice, tightens the filter of a case loader, June 16, 2015, at McConnell Air Force Base, Kan. Vehicle maintainers inspect case loaders annually to ensure they are properly functioning. Loaders are used for construction applications, site preparation, digging and handling material. (U.S. Air Force photo by Senior Airman David Bernal Del Agua)