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For those who love to watch planes, here is a video from 2015 with all three of NASA's WB-57 aircraft flying in formation over Houston. This flight was the first time that three WB-57s have been aloft simultaneously since the early 1970s, when the U.S. Air Force had an active squadron of WB-57s.
https://www.youtube.com/watch?v=TvmVTzN8exQ
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