perhaps mentally ill individuals -- that's to be determined -- but maybe i can do a bigger body count. we've seen it, the pulse went up to 48, now this one's over 50. so i think what stands out, this is horrific event and i think we need to be concerned that we figure out some way to put a stop to them. >> let me ask you about the role of surveillance cameras and what they might offer in terms of the insights. we know the fbi is using bill boards to ask for the public's help in trying to figure out the motive. but it seems very odd that although despite his age, there's been no digital footprint of the shooter to give us any insights into his mind-set at the time of the shooting. what do you think are going to be the key clues that they can use to try to piece that together? >> well, i think, of course, if he set up cameras, or many, many