Senior Airman Christopher Gallman is a defender with the 455th Expeditionary Security Forces Squadron. To counter the challenges that unmanned aircraft systems pose on the battlefield, the team is training to pilot and use the drones, so enemy tactics can be replicated and used to train coalition forces on how to react to them. Gallman is deployed out of Dyess Air Force Base, Texas, and is a native of Elgin, Illinois. (U.S. Air Force photo by Staff Sgt. Benjamin Gonsier)