A crew chief from Texas Army National Guard Company C, 2-149 Aviation, scans the horizon from a UH-60 Black Hawk helicopter during a sling load and medical evacuation exercise, Operation Alamo Evacuation, Nov. 18, 2017, at Martindale Army Airfield, Texas. Operation Alamo Evacuation was a joint-training exercise between Airmen from the 26th Aerial Port Squadron and Soldiers from the Texas ARNG. (U.S. Air Force photo by Senior Airman Stormy Archer)