insignificant part of the process. we just don't know. >> they are working hard to figure that out. thanks very much, pamela brown. let's dig deeper right now with our justice reporter evan perez who has information on the investigation. also with us is mike weiss, a 777 pilot and peter goelz, and former fbi assistant director tom fuentes. evan, let's start with you. you're talking to your sources and learning new information. tell us what you've learned. >> wolf, the leading theory, we're hearing from counterterrorism officials here in the united states, is that they believe this is ultimately going to prove to be an accident. now, they are not ruling out anything. there are still a lot of questions that they are looking into but they have come to this initial conclusion at least because they've looked at online profiles, they've done interviews with neighbors, friends, and they have done