When the old BMEWS sites at Thule and Clear first came on line, radar signals bouncing off the Moon were interpreted as unidentified objects that were possibly incoming missiles. They used the same basic work around to eliminate the false returns for the nearly 40 years that system was in operation.
BMEWS officially stood for Ballistic Missile Early Warning System, but the more popular interpretation was Bewildered Men Existing Without Sex.
I'm not sure about this guy's explanations of the bangs that would sound when one of the transmitters went. We never had a capacitor blow while I was up there, but maybe they replaced the original ones. The Klystrons tended to blow fairly often and they sounded just like a gunshot, which was good in a way. The console operators knew to check their consoles immediately to figure out which transmitter blew.
We didn't have static electricity problems in the control rooms by time I was up there, either. On the other hand, the static electricity in the dorm rooms was horrible.
I remember also back from the old days when a flock of geese was interpreted by NORAD as an incoming missile attack. I can't recall whether or not they realized their error before scrambling interceptors.