U.S. Air Force pararescuemen, assigned to the 83rd Expeditionary Rescue Squadron, load simulated casualties on board a CH-47F Chinook, flown by members of U.S. Army Task Force Brawler, during a personnel recovery exercise at an undisclosed location in Afghanistan, March 6, 2018. The Army crews and Air Force Guardian Angel teams conducted the exercise to build teamwork and procedures as they provide joint personnel recovery capability, aiding in the delivery of decisive airpower for U.S. Central Command. (U.S. Air Force Photo by Tech. Sgt. Gregory Brook)