This clip is Reel 1, Part 3 of a 5-part film. Watch from the beginning
In the Cause of Imagination
Part 4
Target Lights
Part 2
Signal Corps 3
Part 1
Iberian Hampton, Et Al Edward Et Al (U.S.D.C., N.D. Illinois), Civil Action No. 70-C-1384 Consolidated U.S. Attorney's Office
Part 6
Progress Report-1953
Part 5
Today No. 4
Part 3
Focus on Progress No. 7
Untitled