Created by a somewhat inebriated Adam and Hawk, to be amended as necessary:
room for a modern stretcher
firefighting equipment, such as something that dispenses extinguishing foam
equipment chest (for the SCBA, etc.)
a ladder
defib machine
oxygen
emergency blankets
gps
megaphone
two way radio
siren
toolbox/box for police stuff
brilliant power tools such as saws and the jaws of life
an axe
a bomb kit
hazmat stuff
inflatable rubber dinghy
inflatable saint bernard, with barrel
a box of canned tuna