1
00:00:00,469 --> 00:00:02,191
This year , Arnold Engineering 

2
00:00:02,191 --> 00:00:04,413
Development Complex celebrates 75 years 

3
00:00:04,413 --> 00:00:06,580
of American innovation . Early testing 

4
00:00:06,580 --> 00:00:08,413
at Arnold included vital work on 

5
00:00:08,413 --> 00:00:10,636
America's Atlas rocket program . Tunnel 

6
00:00:10,636 --> 00:00:12,858
engineers were the first to explain the 

7
00:00:12,858 --> 00:00:15,080
odd ballooning that was coming from the 

8
00:00:15,080 --> 00:00:17,025
nozzle throat , overcoming serious 

9
00:00:17,025 --> 00:00:16,829
engineering problems in our early 

10
00:00:16,829 --> 00:00:19,350
missile program . Atlas boosters were 

11
00:00:19,350 --> 00:00:21,517
used to launch the first US astronauts 

12
00:00:21,517 --> 00:00:23,350
into orbit . Make plans to come 

13
00:00:23,350 --> 00:00:25,899
celebrate the 75th anniversary of AEDC 

14
00:00:25,899 --> 00:00:27,955
with us at the Arnold Air Force Base 

15
00:00:27,955 --> 00:00:29,549
Open House on June 27th .