I'm not a firefighter nor am I an EMT, but a friend of mine is the author of Ambulance Driver Files (cool dude) at Fire/ EMS Blogs and seems to be a really good source of knowledge for most things in that area. I've "known" Kelly since around 2007, albeit virtually, and honestly, I'd put my life in his hands if the situation warranted it.

Contacting him for his opinion might be worth a shot.