I will tell you from personal experience if you enjoy your sanity and don't want to be constantly screwed over don't work at Yosemite. I was a Fed FF there and it was one of the worst career moves ever. 911 EMS calls are mostly handled by LEO as about 99 percent of them are at least EMTbasics. You will transport mostly non emergency as if it's a emergency 9 times out of 10 patients are flown out if that level of care is needed. SAR has a pretty big group there that are mostly rock climber tree hugging stoners that every time I had to deal with gave off a unprofessional vibe. Fire is handled by five different stations running both wildland engines type 3 and 6 engines along with struture engine at each stations. Also there is wildland fire use module based out of the big office right outside the park in El Portel along with another station. There is also a helicopter attack crew based out of Crain Flat. Fire engine crews spends a lot of time in station and only work during daytime and have a 10 minute recall at night. The wildland fire use crew tends to go out in the backcountry and monitor fires and dose a lot of calls to lighting caused fires that are slow moving and pose no risk so they let it do the natural thing and burn unless it's in the suppression zone of the park. I worked very closely with the EMS based out of the valley on a couple occasions but mostly I never saw them outside the valley clinic. Yosemite hiring process from personal experience is a cluster and a mess. Only a handful of HR doing the hiring for hundreds. Most people are seasonal Fed employees there and during the winter fire, Leo, and EMS is cut to the bone to what I consider negligible levels. No room for advancement. It is a very top heavy organization and lots of oversight and political BS. If you have any questions feel free to ask.