They must have magazines close at hand.
Close enough for what? To load them in after the guardmen are shot? Loading the weapon is best done behind cover, if the action has already started. If you are the first target in the fray, you won't be able to return fire very quickly at all.
Just anti gun PC.
After 9-11 the CA guard, and many in the northeast as well, were similarly unarmed. In Texas and Oklahoma, OTOH, I saw magazines in the rifles, in both San Antonio and Oklahoma City.
Not obviously. I see no magazine pouches. Although at least they have pressure bandages on their left shoulder straps.
If they aren't going to deploy them with ammo, they should at least give them large clubs.