An Air Force pararescueman, assigned to the 83rd Expeditionary Rescue Squadron, communicates with an Army Task Force Brawler CH-47F Chinook during a training exercise at an undisclosed location in the mountains of Afghanistan, March 14, 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)