I would go with Doug's recommendation to buy a film scanner but would use an inexpensive 35mm camera with manual focus. I shot some fires for a local engine company and blew all most every shot on the first one because the heat and smoke confused my SLR's autofocus. Out of over 300 frames I had less than 30 that weren't soft... and those I shot with a manual focus lens.
From then on I stayed strictly with manual focus and got way better results.
You also pretty much have to count on getting the camera wet at some point; even most of the pro digitals don't handle moisture well.
I gotta say, I've always respected firefighters but after working closely with a company, even dressing out and going in with them... I am in awe. I learned that smoke in a structure fire ain't your run of the mill, wood burning smoke; it's super-toxic and super-dense. I had no idea how much people could do in an unfamiliar place with absolutely non-existent visibilty. It was also the ultimate demonstration in teamwork. It completely changed my view of what firefighters do.
Ps. I tried to attach one of my fire shots but couldn't get it to upload... maybe later.
Good luck,
chip