A.freaking.men.
And speaking of men, I think the medium duty helps firefighters trapped in the EMS role feel more manly.
I preach about this all the time, and nobody ever listens because they are tired of hearing me talk.
One of the biggest problems with municipalities spending the money to buy stuff like this is that they never, ever consult the high-functioning private agencies to see what they're doing.
I've seen a Type III configured so well that it had plenty of room in the backboard compartment for the reeves and stair chair, so that all the compartments on the driver side could be given over to gear and air packs. Voila, a perfect fire/medic unit.
In our rural area, we rely on the medic crews to fill out the engine crews on the rare occasion there's actually a working fire. They need to have air packs they brought to the scene, but not at the expense of driving a behemoth.
They are just so stinking manly, though.