Ray, I have to remind you of the topic of this thread: the secret of Farthingloe
Tolkien didn't invent time travel, but came across information with an eye to the future...
He wrote his book much earlier than it was printed, which was after WWII, and some of the information he was coming out with happened to correspond with what was being developed long before 1937 (radar). All top secret, of course!
Radar wasn't simply invented in 3 days and then placed on a hill top!
I tried to play down this thread, but ended up having to give credence to Chris
Enough now
