[[
The office has a small armory, with a handful of rifles and shotguns, and a mess of personal sidearms. The medical supply cabinet has what you might need for immediate first aid, but nothing extensive.
]]
Windows are average sized, glass, not barred or protected in any way at all. It's a relatively small city, and the crime rates are low - Max, if nobody else, would know this to be fact. There was no real reason to make the police office into a fortress when it was built, and the need has never arisen.
A thorough inspection of the place will show that there are, indeed, no other people at all; living or otherwise; anywhere in the building, exempting the two corpses behind the receptionist's counter.
Caitlin's search for explosives will be for naught. This police department has never had any reason to blow anything up.
The moans from outside are getting closer, and the fate the entail is beginning to become more apparent to each of you.
"Guhhh..."