I flew for Bighorn Airways on the smoke jumper contract for several years. They were owned by Hawkins and Powers out Of Greybull Wy. I enjoyed the flying but as has been mentioned here you can forget about a home life during fire season. Of all the flying I've done that is the one I'd go back to if I had to make a change.
Bighorn is still alive and well and are out of Sheridan Wyoming. Smoke jumper flying is not the same as firebombing but if you like spending lots of time down low dropping stuff you'd love it. Once you drop your jumpers you drop down and supply paracargo from about 100 to 150'. It's a kick. Bighorn seems to be hiring each season.