Two United States Air Force F-15C Eagles from the 144th Fighter Wing, California Air National Guard fly over the High Arctic during Exercise Vigilant Shield 16, Oct. 22, 2015. From Oct. 15-26, 2015, approximately 700 members from the Canadian Armed forces, the United States Air Force, the United States Navy, and the United States Air National Guard are deploying to Iqaluit, Nunavut, and 5 Wing Goose Bay, Newfoundland and Labrador for Exercise Vigilant Shield 16. (U.S. Air National Guard photo by Master Sgt. David J. Loeffler/released)