U.S. Air Force Staff Sgt. Patrick Englishby, C-130 Hercules loadmaster with the 914th Airlift Wing, Niagara Falls Air Reserve Station, N.Y., watches for enemy threats out the troop door window during Maple Flag in Edmonton/Cold Lake, Alberta, Canada, June 3, 2014. Maple Flag is an international exercise designed to enhance the interoperability of C-130 aircrews, maintainers and support specialists in a simulated combat environment. (U.S. Air Force photo by Master Sgt. John R. Nimmo, Sr./Released)