The GE 477L Nuclear Detection and Reporting System (NUDETS, NUDETS 477L, Program 477L) was a Cold War "Nuclear Detonation and Radioactive Fall-out Reporting System" for the National Military Command System. Planning/development began "by September 1, 1959, when.NORAD had taken over responsibility from CONAD." In February 1961, General Electric and the sensor subcontractor Dresser agreed on a "team proposal" to the USAF.