My old friend Airman Jim, who was an electronics tech and worked on these at Barksdale, always said that set was wildly innacurrate. Seemed to really bother him. Didn't matter much to me.
Nice article, Mike. I like that; rook on the chessboard.
One time I was flying up to Boise in a United 727. The captain came over the PA and said that passengers should look out and down on the right side, and folks over on the left stay put you'll get your turn.
We crossed over a BUFF flying east-west, probably 3000 feet below us. Very very impressive.