Turnin' Wrenches
Airman 1st Class Joseph Martincic, 28th Logistics Readiness Squadron vehicle maintenance, tightens a bolt while changing a glow plug controller in a van here, April 14. The glow plug controller regulates voltage to the glow plugs for a specified period of time to assist with cold starts. (U.S. Air Force photo/Airman 1st Class Joshua J. Seybert)