U.S. Air Force Senior Airman Adam Strom, C-130 Hercules loadmaster with the 94th Airlift Wing, Dobbins Air Reserve Base, Ga., installs the observation bubble in the forward escape hatch opening during Maple Flag 47 in Edmonton/Cold Lake, Alberta, Canada, May 30, 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)