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4721st Air Defense Group
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The 4721st Air Defense Group is a discontinued group of the United States Air Force. Its last assignment was with the 4700th Air Defense Wing at Larson Air Force Base, Washington, where it was last ac
538th Fighter-Interceptor Squadron F-104 Starfighter at Larson Air Force Base
538th Fighter-Interceptor Squadron F-104 Starfighter at Larson Air Force Base
Semi-Automatic Ground Environment
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The Semi-Automated Ground Environment was a system of large computers and associated networking equipment that coordinated data from many radar sites and processed it to produce a single unified image
The 4-story SAGE blockhouses with 3.5 acres (1.4 ha) of floor space "were hardened [for] overpressures of" 5 psi (34 kPa). A shorter adjoining buildin
The 4-story SAGE blockhouses with 3.5 acres (1.4 ha) of floor space "were hardened [for] overpressures of" 5 psi (34 kPa). A shorter adjoining building (left) had generators below the 4 intake/exhaust structures on the roof. (DC-01 shown)
Whirlwind computer elements: core memory (left) and operator console
Whirlwind computer elements: core memory (left) and operator console
Module from a SAGE
Module from a SAGE
The RCA #6499 Radechon tube was used for random-access memory in the computers.
The RCA #6499 Radechon tube was used for random-access memory in the computers.