Airmen assess and prepare to triage a simulated patient prior to transport on an awaiting ambulance bus during an improved explosive device emergency response exercise Jan. 25, 2017, on Joint Base San Antonio, Texas-Lackland. The exercise tested the 59th Medical Wing’s clinical and field response teams’ readiness in advent of an on-base mass casualty incident. (U.S. Air Force photo/Staff Sgt. Michael Ellis)