Wow how did I miss this thread?
A buddy of mine works there and yeah they get some damn good calls out there. As far as I know they're doing 72's (as of summer) and I haven't heard anything of shifts changing. Not saying it is or isn't going to happen, but the last shift info I was told is 72hr shifts.
Mimicking Desert's post yes you will start off as a reserve. I may be wrong, but I think you get paid if you work x amount of hours. Kind of like a PCF (paid call firefighter) is how it was explained to me. They hire all their full time employees from their reserves.
All the fire depts they run with are BLS. Except for that one rare moment when they run with SBCoFD then both FD and MBA are ALS. But for the most part 29 Palms Fire and Morongo Fire are BLS.
They have 5 stations, I believe one in each high desert community. You could probably find that info out on their webpage:
https://www.mbambulance.org
Everyone I've talked to enjoys working there. From what it sounds like its a good company to work at that runs decent calls. The only "thing" I've heard employees talk about is the code 2 transports. Apparently they get some very long distance transports.