I think "Zippy" has put in the most sensible post so far!
If the footage taken from a camera is being used for internal Fire Service use only,(e.g. training or record keeping) then really, where is the issue?
I don't agree with footage from incidents going on Youtube or being supplied to the media, UNLESS sanctioned by the Fire Service as public interest or whatever.
Also, if a member of another service has an issue and politely asks that they not be recorded, then turn it off!(no big deal really)
I know that most reasonable Emergency Service personnel I work with from other agencies wouldn't have an issue, as you can be very easily filmed at incidents by media agencies anyhow!
I wonder sometimes if those that have a big issue with being filmed, lack confidence in doing their job correctly or are worried about being seen in the wrong P.P.E. etc.
Do the right thing, and there won't be an issue, and if you make a stuff up then at least you have something to watch and learn from.(remember...TRAINING USE)
Cheers, Mat