i want to talk about about the psychological impact, jeff gardere. make of somebody who goes on this kind of rampage and doesn't shoot soldiers, doesn't allegedly shoot soldiers, but goes and targets women and even children? >> well, obviously someone who has an extreme amount of rage to the point, of course, where they engage in these sorts of murders or homicides. it could have been, we know, that the rate of ptsd is extremely high off of veterans returning from iraq and afghanistan. in fact, some studies show one in five returning vets from those areas have had ptsd. and we also have to look at, suzanne, the possibility that this is a person who maybe became psychotic or maybe was some sort of a murderer to begin with. in other words, an extreme personality disorder, a psychopath. right now we just don't know. and i think you're going to hear a lot of people throwing around that term, ptsd, because it is such, such major issue for soldiers. >> do we think it has anything to do with the tour of duty, that this was his fourth, that the longer someone