TexasCHLforum.com

I was kinda wondering the same thing...who is able to pop out of any kind of seizure, instantly grab their gun and with enough clarity and thought perceive a danger, take aim and fire? But the article said the fireman was in the doorway, so maybe the man had a few moments to recover and then saw the fireman in the doorway and thought he was a threat...but didn't know it was the same guy who helped him?
If this is what happened, it is very tragic...well, it's tragic anyway.