U.S. Air Force Senior Airman Sarah Irwin, Aerial Port Specialist , 30th Aerial Port Squadron, Niagra Falls, NY., Drives an Oshkosh Defense Medium Tactical 6x6 Cargo Truck, while off loading cargo from a C-130 Hercules aircraft in support of Exercise Global Medic, Fort McCoy, Wis., July 20, 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).