Two-thirds (10 counting) of the dogs are still technically alive, but they won't last long without immediate medical care.
Most of the mutants are also dead, except for 2 flying men who just barely survived getting shot and falling straight down. Their blood shines weirdly rainbow-ish in the light, like oil.

Going through the mutants' pockets and wraps turns up not much ammo. Aside from the shells and bullets already loaded into the guns, only 5 other shells are loose, for 13 shotgun shells and 28 pistol bullets in total. The five Colt SAA revolvers and the eight H&R Model 8 shotguns are all in okay condition. It seems the guards were running low.
Aside form that, the guards were all wearing mere cloth armor over their unnaturally hardened skin. Tucked into their bags and satchels, Sean finds a bunch of empty plastic bottles (7 of those), three torches (unlit, obviously), two cigarettes lighters with some fuel left, two glass bottles of strong liquor, four lengths of strong metal wire, a screwdriver, two pocketknives, two wrenches, a claw hammer, five bandages, 6 pairs of socks, eight tobacco cigarettes, three small batteries, a pill bottle with 8 pills inside, and a large towel.

Calling up on the radio, Sean discusses things and gives his sit-rep.
They reply that they did not know of any mutants in the area, but gingerly comment that they should have anticipated that the monsters may be around. Their only plan in the case of mutants is to simply avoid them if possible, unless they can be dealt with decisively.
The building must be cleared out AND kept in one piece, or else they will have to abort the whole operation. If they can find a way to get the animals and plants out or dead without damaging the machinery within, that would be ideal. Perhaps some kind of chemical warfare is in order?
They expect to arrive in 3 hours.