the incidents with the gun in seattle, the other one here in ft. worth, they said they never knew about that. they never knew the severity of it. but one thing a friend did say to us that said looking back on it, it was kind of disturbing, that alexis was obsessed with online, violent video games, that every time they went over to his apartment or to his house, he was in his room with headphones on, communicating with other people online and playing these very violent games, the types where you have a weapon and you round the corner and shoot not targets but people, and they even halfway joked about it, saying, you're 34 years old, you need to get a life here. and he said, well, this is my life, or words to that effect. he enjoyed playing the video games. whether that had any affect on his actions today, we just don't know. >> charles, do we know anything about what authorities still want to know about his background and his history, what police are still trying to find out about him?