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« on: October 15, 2012, 0057 UTC »
Back around 1975, when I was an electrical engineering student in college, the EE department used to sponsor talks every Wednesday that would be of interest to electrical engineers. One week, they had a man who was in the NSA during the Cuban missile crisis. He talked about some info that had been declassified, so it was then OK to tell the world. What he talked about was an atmospheric phenomenon that was occurring between Florida and Cuba which caused radar signals from Florida aimed at Cuba to be deflected upward. The radar was supposed to be monitoring Cuba for missile launches, but because of the phenomenon (which they were unaware of at the time) they wouldn't have detected a launched missile until it was too late. When they finally became aware of it, they did a series of tests with aircraft in the Caribbean and figured out a way around the problem.
Another scary piece of this history.