sense of the chaos of this investigation, and really, just the difficulty of doing this, they still don't know now whether there was ever a third shooting. that is something that law enforcement is going back to check on. this is based on early reports from witnesses. as you know, witnesses often don't necessarily remember everything that they see. they're trying to get out of the scene and all that. so right now we do know that these two suspects that were killed some distance away from the original shooting scene are believed to be the people who carried out the initial shooting at the initial -- the initial shooting. and so now the third scene that they're doing the search where the atf has tried to resolve whether or not there is an explosive device, that scene is associated with one of these suspects, one of the -- it's his home or something to that effect. so that is what we know from law enforcement at this point.