I have a few questions regarding Friendly NPC's

1. Do they track ammo usage? the few times I have managed to get friendly NPC's to equip weapons i've found it really hard to test if they actually consume ammo

2. Do they care if I aim at them?, So far I haven't found a situation but wanna be safe.

3. do they need food or mood stuff? or will they just survive indefinitely.

Sorry for the silly questions dont get a tonne of time to test stuff like this and it will highly change the way i engage with the mod :)