U.S. Air Force personnel assemble Utilis tents to be used as living quarters while participating in Exercise Global Medic, Fort McCoy, Wis., July 16, 2013. Global Medic is an annual joint-reserve field-training exercise designed to replicate all facets of combat theater aeromedical evacuation support. (U.S. Air Force photo by Senior Airman Juan A. Duenas/Released)