i think it should be a manditory part of every firefighters training, even though a very basic skill, can be extremely usefull at anytime.
Yes - one of my chiefs died on the fire ground outside a fully-involved house fire - so yes, everyone should KNOW CPR and I basic first aid in our field, no matter your role - when you work around danger, be prepared...
Heat exhaustion / dehydration is another big thing I've seen - while i understand it is preventable, the issue still needs to be addressed when it happens.
And on several scenes we suddenly started to have medical problems with home/property owners a few hours into the situation. I remember one giant furniture store warehouse fire my medically-trained fire chief pulled me aside and made me babysit the property owner - a recent open heart surgery patient - literally i followed the property owner around the entire scene for 20 hours - monitoring his vitals and keeping him calm and making sure he ate and drank, etc. etc. etc. keeping his little hynee as safe as possible.
In California to recieve your FF1 the back of the packet to get signed off is First Responder. When you get First Responder you get a professional rescuer AED & CPR cert. If you don't have at least a First Responder then you are not going to get your FF1. Most of us at our dept. have our EMT-B. Although FF1 is not required it is requried that you go through a volunteer firefighting academy that starts in Nov. and ends in May. It is every Monday night from 6 - 10. Our chief requires that you get at least a FR before you go on any medical calls.
I know that some depts. don't do medical calls but we do so it is required training for us.
We run 1,500 - 2,000 calls a year and 90% of them are medical.