I'm guessing there are some type of union regulations as to what type of gear is used, and that if personal gear is used, the firefighter/EMT is responsible. I'm also guessing that all the heavy gear your brother would need, ie axe and prybar etc, would already be on the truck. Was your brother issued any type of knife or multitool when he was an EMT? Will he be issued any type of knife or multitool when he becomes a firefighter? Does he carry a favorite knife with him on the job now? If so, whatever you get him might just be something he leaves at home. If he carries a junker, definitely, get him a new knife of high quality. I don't know what type of gear firefighters carry, but a good multitool and knife would probably be best for him as an EMT. I would get him, as others mentioned, a Spyderco Rescue, VG10 steel. You could also get him an Atlantic Salt, H1 steel. The Blurs are neat, but use 440A. I've heard that the Benchmade Rescue Hooks are good, I've also heard bad reviews, but it looks to me like something worth researching. SOG makes a rescue version of their Flash series. Basically anything with a blunt tip, because the main use of the knife will probably be cutting seatbelts.