Paramedic Pair San Antonio paramedics participate in the National Disaster Medical System exercise March 20, 2019, at Joint Base San Antonio-Lackland, Texas. Defense Department personnel often volunteer their off-duty time to work as emergency medical technicians. SHARE IMAGE: Download Image: Full Size (1.85 MB) Tags: Air Force, Partnerships Photo By: Air Force Master Sgt. Kristian Carter VIRIN: 190320-F-OC928-2226E.JPG Photo Gallery