Staff Sgt. Mark Visita, 59th Training Group military training leader, marches technical training students to class on April 14, 2016. The 59th Training Group is the Air Force component at METC, the Defense Department’s Medical Education and Training Campus located at Joint Base San Antonio-Fort Sam Houston, Texas. Fewer than two dozen military training leaders are responsible for more than 5,000 technical training students annually. (U.S. Air Force photo/Staff Sgt. Michael Ellis)