U.S. Air Force Staff Sgt. Mark Young, Jr., Air Force Participating Test Unit test analyst, navigates a simulation demonstration of the Tactical Data Link network at Joint Base Langley-Eustis, Virginia, Sept. 16, 2021. The AFPTU is the Air Force’s only facility of its kind. Its mission is to test for certification of the Air Force’s Command, Control, Communications, Computers and Intelligence aircraft and weapons systems via the Air Force System Interoperability Test process to ensure timely distribution of battlespace information to the Warfighter. (U.S. Air Force photo by Tech. Sgt. Carlin Leslie)
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