Duke University Hacking for Defense (H4D) students Joy Duer, Mary Gooneratne and Linda Zhang, walk through an engine inspection bay inside of the hush house during a tour, Nov. 15, 2019, Seymour Johnson Air Force Base, N.C. During the culmination period of their semester project, Joy Duer received an F-15E Strike Eagle flight. The H4D class assignment consisted of Duke University seniors finding a solution to a real-world command and control problem. (U.S. Air Force photo by Tech. Sgt. Vernon Young Jr.)