A U.S. Air Force F-15C Eagle taxis for takeoff on Kadena Air Base, Japan, Sept. 16, 2014. The Space, Aerial and Nuclear Networks Division at Hanscom Air Force Base, Mass., is working to ensure connectivity between 4th generation aircraft, such as the F-15 here, and 5th generation aircraft, such as F-22s and F-35s, to enable a shared common tactical picture. (U.S. Air Force photo/Senior Airman Maeson L. Elleman)