GWEN

Abbreviation - Ground Wave Emergency Network

The Ground Wave Emergency Network (GWEN)[1] was a command and control communications system intended for use by the United States government to facilitate military communications before, during and after a nuclear war. Specifically, GWEN was constructed to survive the effects of a high-altitude nuclear explosion generated electromagnetic pulse (HEMP) to ensure that the United States President or his survivors could issue a launch order to strategic nuclear bombers.