Combat Arms NCO in charge Tech. Sgt. Jose Marrero talks to U.S. Air Force and Navy security forces members following heavy weapons firing at Fort Bliss's Range 39, July 26, 2017. The weapons firing was part of the first joint Navy-Air Force basic security course at the Air Force Security Forces Center's Desert Defender Ground Combat Readiness Training Center. (U.S. Air Force photo by Debbie Aragon)