Tech. Sgt. Caleb Nicholas, 20th Maintenance Group Air Force Enhancement Program manager, looks under a microscope as he fixes a signal light at Shaw Air Force Base, S.C., March 14, 2013. AFREP is a program that revolves around finding parts that are being thrown away and finding ways to repair them. (U.S. Air Force photo by Airman 1st Class Nicole Sikorski)