Semi-Automatic Ground Environment Air Defense System

The Semi-Automatic Ground Environment, or SAGE, was the nation's first air defense system and was the impetus for the establishment of Lincoln Laboratory. The sections linked to the images below describe the history of this seminal, large-scale system-engineering project, and the role that it had in shaping the culture of Lincoln Laboratory as it exists today.

atomic explosion Lincoln Laboratory in 1956 SAGE schematic
        A New Threat
 Lincoln Laboratory Origins  SAGE Air Defense System
Whirlwind Radar tower in Truro, MA Early-warning radars
  Early Digital Computing Cape Cod SAGE Prototype     Early-Warning Radars
Map of SAGE sites Jay Forrester Main entrance to Lincoln Laboratory
        SAGE Transition      Reflections on SAGE           New Callings







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