Air Force TSgt Dave Johnson 210 EIS Minneapolis MN. holds a piece of wood up to a pole during the installation of a mass alert system at Volk Field WI. during Patriot 08, Sunday, July 20 2008. Patriot, the largest National Guard exercise held across the United States, increases the warfighting capabilities of the National Guard, reserve and active components of the United States Air Force and Army. Additionally, the participation of Canadian, British and Dutch forces increases combined effectiveness. Senior Airman Matthew SmithReleased

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Keywords: .., air, army, defense, exercise, field, force, fort, guard, joint, mccoy, military, national, patriot, service, united, volk, war, wi