History: "Engineers at the Lewis Flight Propulsion Laboratory (now NASA's Glenn Research Center) check a model of a supersonic aircraft before a test run in the 10 ft. x 10 ft. Supersonic Wind Tunnel test section.", 1957 [3000 x 2400]

https://i.redd.it/55ceqa1mybpy.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/636e3l/engineers_at_the_lewis_flight_propulsion/?utm_source=ifttt