All the way at the top on all the pages the word Confidential is written and the red lettering stamped on the lower left is an espionage act warning not to transmit this to unauthorized persons.... Whoops ... I'm in trouble now My father-in-law was a navigator aboard a U.S. Navy patrol bomber (Martin PBM) during WWII. He once told me about the various training that he had before being assigned to a squadron. Radar school was evidently as top-secret as anything the average soldier, sailor or airman was likely to encounter. The facility itself was unmarked, but bristeled with armed guards. All instructions that the servicemen received had to be memorized on-site; you were not permitted to take notes.
When I think of how porous our security at places like Los Alamos seems in comparison, I can only shake my head in dismay.
I took the AF Microwave Principles and Application Course. 2 months. Before you get there, there is another course that lasts 9 months. You must learn everything about DC and AC circuit analysis so the microwave equations make sense. Absorption and reflection coeff's. Return loss, attenuation, linearity, boresight, sidelobes, coupling, noise figure, sidebands, etc., etc. You never forget what you learn in military schools, because you are in class for 6 hours and study about 4 hours more later. They don't waste time on you.
Now I start work an hour or more earlier than when I was AD. I like the challenges.