Just got an email from Dave Workman--staff editor for The New Gun Week and out-going NRA Director. He has been pursuing this story for a couple of days, and is working on an article for the next issue of Gun Week. At Dave's request, I won't go into even the paltry details he shared--I asked him up front if he would let me post his findings here, and he doesn't want to scoop himself, so to speak. (Part of the reason for the paltry details, though, was that the research is yet incomplete.)
Sounds like there's less here than meets the eye--Tucson is going to pay for the roof, for example. Sounds like most of the cops at the site were Gun People, too. Big problem is Eroh's health.