I first learned about SAGE through an unlikely mechanism: sitting in the cockpit of a CF-100. There is a switch labeled "attack" that really confused me. It tur

I first learned about SAGE through an unlikely mechanism: sitting in the cockpit of a CF-100. There is a switch labeled "attack" that really confused me. It turns out the SAGE could be used to direct aircraft directly to a target. After learning about this, I did some more research and it seems a signal was broadcast that could be received to direct planes to a target SAGE had identified. I don't have a link to the documents, but originally it was a relatively small transmitter that was upgraded to a much powerful system, I think around 30000 watts of output. It was interesting to me because today I assume an attacker would either jam such a system or actually interfere with it in such a way to send the interceptor off course. I never could find any info on the actual signal transmitted and if it had any form of security. https://aviation.stackexchange.com/questions/33205/why-does-the-cf-100-autopilot-have-a-toggle-switch-labeled-attack https://aviation.stackexchange.com/questions/33205/why-does-... Another cool fact: at the opposite end of the SAGE project we have the "Safeguard" project which was completed in 1975. It spent less than 24 hours in operational capacity before being cancelled. https://en.wikipedia.org/wiki/Stanley_R._Mickelsen_Safeguard_Complex https://en.wikipedia.org/wiki/Stanley_R._Mickelsen_Safeguard...