U.S. Air Force 1st Lt. Jason Rathje, an advanced weapon design engineer with Air Force Research Lab weapons dynamics and control science branch, works at his computer at the Research Engineering Education Facility in Shalimar, Fla., April 4, 2013. Rathje is part of a team of engineers working to develop autonomous and navigation using quadrotors and other vehicles. (U.S. Air Force photo/Staff Sgt. John Bainter)
Staff Sgt. John Bainter
Taken on 4 April 2013
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