Canadian medical team made up of members from units across Canada assesses a patient before treatment begins during a mass casualty exercise at Volk Field, Wis., on July 19, 2005, during exercise Patriot 05. Patriot 05 is the largest annual exercise held across the United States. This exercise increases the war fighting capabilities of the National Guard, Reserve, and active components of the Air Force and Army. Additionally, Canadian, United Kingdom, and Dutch forces are participating, increasing combined effectiveness. (U.S. Air Force photo by Tech. Sgt. Robert Jones) (Released)