Sorry to bring back an old thread, but stuff like this gets to me sometimes.
Common terminology only matters if you are working with somebody. We use RIT here in Philly but we dont call New York to our firegrounds. I can see the need in Bumfook when you have multiple different departments operating on the same fireground to use common terminology, but that need doesnt apply here. I see no need for somebody listening on the internet from Oklahoma to completely understand every radio transmission on our fireground. And likewise, I see no need for me to understand theirs. If the FDNY uses FAST, as long as all the members of the FDNY know what FAST means, how is it a problem. If Chicago uses TERD, well, it fits! :D