all should. that's what the investigations will be looking into it. pamela brown, washington, d.c., thanks so much. 6 minutes past the hour. we're hearing from friends of aaron alexis who insist they had no idea this man was capable of this. >> it's like dr. jekyll and mr. hyde. who was this guy? >> if there was something i could have stopped? is there some type of behavior that i ignored or didn't see that i could have prevented this? but there is no answers. he was very intellectual. his mind was sound. he can hold a conversation with the best of us. and he didn't -- he was not hearing voices. and if he did, he hid it very well. >> isn't that something. but a former roommate tells cnn alexis was paranoid and did carry a handgun because he was