in the city where my full time EMS job is, the Indianapolis Fire Department responds with us on all A code calls. they carry an 02 bag with the standard equipment, an AED, and a trauma bag, on occasion the engine may have a medic on board and he supplements their equipment with a drug box that carries all the meds we have in marion county minus narcotics. Ladders carry the same equipment but also have C collars and a back board.
on My volly Fire Department in rural indiana, our Grass Rig is also our Primary EMS truck. On it, we carry a backboard C-collars, a stocked 02 bag, a trauma bag with all your necesities including oral glucose, and ASA and an AED. nothin super fancy, just enough to get the job done until the ambulance arrives. our engine also carries the same equip. while the tanker has none.