CST: What's your systems malfunction?
Staff Sgt. Joseph Commisso-Vinetti, 455th Expeditionary Communications Squadron, client system technician, assists a customer, Bagram Airfield, Afghanistan, July 27, 2016. The CST shop work through an average of ten processed tickets and work orders weekly and provide on-site repairs for external machines such as printers, phones and computer hard drives. (U.S. Air Force photo by Senior Airman Justyn M. Freeman)