We seem to be assuming things.
1. We assume that the ATF or SO was using the incendiary tear gas. Possibly they were, also possible they were not. I think we should probably wait until the fire investigators make a determination.
As to the differences between the different types of CS dispensers, I was unaware of that (not beaing a tactical team member). We use pressurized gas, period. If the federal agencies use the fire-causing kind, that is probably a policy that needs changed, but its use is likely mandated by procurement policy F10-67543-G (note for the humor-impaired, that is a made-up number), and NOT by some desire to burn guys out. As I said before, if you start a fire, one of two things happens- the guy dies (with horrid press coverage) or the guy comes out armed and desperate. Lose-lose.
2. We also seem to be assuming that this guy was a poor, innocent gun owner being bullied by the ATF. As in, if he has guns, he's a good guy. Whatever. A valid warrant was served for his arrest, he shot a deputy. Not exactly my definition of a stand-up guy.
3. We also seem to be assuming that the agencies screwed up here. I'm not at all convinced they did. I'd like the incendiary device question answered, first.
The axe bites into the door, ripping a hole in one panel. The maniac puts his face into the hole, cackling gleefully, "Here's Johnny...erk."
"And here's Smith and Wesson," murmurs Coronach, Mozambiquing six rounds of .357 into the critter at a range of three feet. -Lawdog
"True pacifism is the finest form of manliness. But if a man comes up to you and cuts your hand off, you don't just offer him the other one. Not if you want to go on playing the piano, you don't." -Sam Peckinpah
"A human being should be able to change a diaper, plan an invasion, butcher a hog, conn a ship, design a building, write a sonnet, balance accounts, build a wall, set a bone, comfort the dying, take orders, give orders, cooperate, act alone, solve equations, analyze a new problem, pitch manure, program a computer, cook a tasty meal, fight efficiently, die gallantly. Specialization is for insects." -Robert Heinlein