Royal Canadian Air Force Sgt. Tex Young and Master Cpl. Doug James, both air traffic controllers with the 8 Air Communications and Control Squadron, direct aircraft during Vigilant Shield 15 at Royal Canadian Air Force 5 Wing at Canadian Forces Base Goose Bay, Newfoundland and Labrador province, Canada, Oct. 21, 2014. Vigilant Shield is a weeklong annual exercise designed to emphasize an integrated Department of Defense and civil response in support of the national strategy of aerospace warning and control, defense support of civil authorities and homeland defense.