A U.S. Air Force Airman assigned to the 633d Medical Group holds a bandage to a wound on a patient simulator during the Tactical Combat Casualty Care exercise at Joint Base Langley-Eustis, Virginia, Sept. 9, 2022. The patient simulators used during this exercise mimic live patients’ post-injury by excreting fluids and chest compressions that simulate breathing, as well as a soft epidermis. (U.S. Air Force photo by Senior Airman Chloe Shanes)