There was a sign off the shop area on Anderson AFB that read : Guam is good by order of the base commander. I was there in ‘67 TDY working on the BUFs.
One interesting one that got me was in the MAC terminal. Until it’s renovation in the mid 80s, clocks showing different world times were above and behind the main counter. The clocks were on wood paneling and all of the names of the different cities just beneath them were evenly spaced except for two. Between them one could see the “ghost” of white letters that were pried off almost a decade before. The city’s name was Saigon. They could have covered it up but left it that way on purpose.