It was 70 years ago on Sept. 18, 1947, that the U.S. Air Force was established as its own branch of the U.S. military, under the National Security Act of 1947, realizing a vision of military aviators dating back to the first World War.
The Air Force was never just about jets and planes. From its beginnings, it was about engineering. Skilled soldiers under the U.S. Army Corps of Engineers once shouldered the burden of constructing the runways and facilities and of building the Air Force into what it is today.