As both a career firefighter, and a firefighter on 2 small rural volunteer/paid on call fire departments, can I ask you a couple of questions without it turning into yet another pissing match?
If you "think" that any group, other than your immediate family (if that) is going to work out post shtf, u r nuts. People can't even agree on which rifle and load to use, and you think that they will agree on discipline, guard duty, who gets what meds, etc? ha. Not a chance in hell. Everyone will try to be the big chief, and will get shot or stabbed in turn.