Robert Del Tredici - At Work in the Fields of the Bomb
63. Perimeter Acquisition Radar Characterization System
This is the Space Command's PARCS early-warning radar facility in Concrete, North Dakota. It Assesses data from incoming missiles and calculates their target trajectories minutes before impact, and relays pre-impact data to the Cheyenne Mountain complex. Cavalier Army Base, Concrete, North Dakota. April 24, 1987.
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