Any Schmuck with a car can see all this information from the interstate. It's no secret. It was no secret in the Cold War as to what carriers were in port you could drive by and count for yourself. The main thing was to not bring them all in at one time and say nanna nanna boo boo to crack pots that may see opportunity in it.
true, but withholding it from the news, you'd only have to worry about 'local' crack-pots, not a sudden surge of them.