. >>> i want to bring in seth kaplan and clint van zandt, a former fbi profiler. clint, my hunch immediately was egypt air. that's because we've been through one of these cases where inexplicable behavior by a co-pilot tunneled out to be explicable. he wanted to kill himself and everybody on the plane. what did you come up with? >> well, number one, we know that's happened about half a dozen times in the last 20 years where we believe a pilot, a co-pilot has intentionally crashed the plane. let's talk about depression. 9% of americans, according to cdc, experience depression of some time. that's reflected within the 30,000 americans again that commit suicide every year, but you know, most people who commit suicide, they'll go off in a corner, run their car off the bridge, but there are those few, chris, who rage against a world. those are the ones that commit violence in the workplace, they come in and shoot everybody. or they come into a school and they're angry at the world and going to take it out on everybody. that's what the fbi, the germans and french have t