Thanks for the great responses. This information is coming in pretty handy.
Point taken. One thing I have already learned is to know what my capabilities are and where to draw the line. Helping somebody at the scene for something would work...interviewing a suspect (unless minor theft, etc) would be left up to the professional terps 
Beowulf, I know you meant this from a deaf standpoint, but it is for the hearies too. Many performers are a-holes...whether you can hear or not. They probably go hand in hand. As you know, I'm coming from radio into law enforcment and I've dealt with some of the nicest artists who would have no problem with deaf rights...if fact would enjoy knowing the could entertain the deaf.
OTH, I've met plenty of them that were not so nice, and hearing or not, they were just a-holes altogether. I won't mention names either, but I've told more than one artist to shove their CD where the sun doesn't shine as I refuse to play it on the air anymore. If you provide me with a list (and some proof that they aren't deaf friendly) I'd be more than happy to skip them when the time comes 
