WEBVTT 00:00.620 --> 00:02.231 This year Arnold Engineering 00:02.231 --> 00:04.453 Development Complex celebrates 75 years 00:04.453 --> 00:06.849 of American innovation . From the 00:06.849 --> 00:09.071 beginning at Arnold , workflow patterns 00:09.071 --> 00:11.127 were established where test projects 00:11.127 --> 00:13.182 began with intensive planning before 00:13.182 --> 00:15.071 moving to scale models . The wind 00:15.071 --> 00:17.182 tunnels allowed test operators to put 00:17.182 --> 00:17.090 articles through multiple iterations in 00:17.090 --> 00:19.257 a short amount of time at a tremendous 00:19.257 --> 00:21.146 savings , all while safely on the 00:21.146 --> 00:23.989 ground . Make plans to come celebrate 00:23.989 --> 00:26.100 the seventy-fifth anniversary of AEDC 00:26.100 --> 00:28.156 with us at the Arnold Air Force Base 00:28.156 --> 00:29.809 open house on June 27th .