True, but it still felt stupid to me how parts of the map were barred off based on your unit. Can't visit the demolitions area as Spec-Ops, really? etc I know it would be too easy otherwise, but it still felt off in terms of plausibility.
The militia is a ragtag of different groups/organisations. According to a conversation between two soldiers near the plant house, these organisations usually don't get along nicely at all, and he was surprised they're able to share grounds and work together like this. It shouldn't come as a surprise the organisations still show a bit of hostility towards one another.
It's even better if you also put a fire extinguisher and a propane tank on the stove!
And a fourth nitroglycerine bottle.