"Randy, don't forget about "homemade exploding targets."
You're right Gary. That is what they were saying started the Springer Fire near Lake George a couple of years ago. I'm not sure if they ever confirmed it.
"Clearly posted at the TH, that campfires were only allowed in improved (may not be word used) campgrounds due to high fire danger. "
They don't do that around here much. I can't recall seeing one posted at a TH. To me the biggest problem with fire bans, in Colorado at least, is the lack of coordination between agencies. Sheriffs and local fire districts are usually a lot quicker to post a fire ban than the NFS. The sheriffs don't go out on the trail to enforce theirs. The NFS rangers won't cite somebody if the sheriff or fire district has a ban but they don't.
I wonder about long distance hikers. How do they know that a ban has been put in place since they left? I actually saw the opposite a few years ago when I met a couple thru hiking the CT. They had run out of fuel and asked where they could get a canister. I told them it was quite a ways but they could cook over a wood fire until they got another. They said they couldn't do that because of the fire ban. It had been lifted 3 or 4 days before but they had no way of knowing. So they were able to continue on.