first to mary ellen o'toole. here's what david wants to know.t it possible that countries to the north may not report the flight plan because they would embarrassed or do not want the attention? >> i think from a behavioral perspective the way we would look at is is to certainly consider whether or not the culture is impacting on people calling in or people reporting information. every time you have a case like this, especially one with such international consequences that does have to be considered and does have to be factored in in terms of what can we do, then, as behavioral scientists, what request we do to encourage people to call in? how do we get around that if it is a barrier? >> richard quest, this one is from hannah. hannah says in the past debris found on satellite have taken two to four days to be released as to being found. why? clearly it won't be there anymore. >> they are going to work out from the tides. >> do they overshoot where they go? >> they will work out where it should be. it was three days ago there. we now know what th

i assume if mary ellen o'toole were on the case, you would want to know what was the security like?one other than the passengers and crew and pilots have gotten on board the plane? was someone in the jump seat? >> that's all very important information. you would want to know all of that. you want to go back and begin looking from a behavior perspective what was going on both in terms of the passengers on that plane and in terms of the plane itself. so you have to look at this and i think that is happening. you look at this whole event through many different lens, but the behavior lens cannot be emphasized enough here. >> i'm so glad you are here. an additional question if i might. not all terrorists are suicidal. the 19 on september 11th, presumably were suicidal. maybe you will offer me a few some of them did not know they were about to die. osama bin laden was not suicidal. even at the end wasn't suicidal. in this case, what would be the working model? how would you approach that question? >> well, first of all, there may not be a working model that is consistent with this. again,

joining me now is mary ellen o'toole, a former fbi agent and profiler.u worked the elizabeth smart case and natalee holloway case and columbine case. what is icon influence and how does it play a role in this case? >> icon influence means that a person for example, a person that the fbi may be looking at who could have been involved in a case, holds a position of status. that position of status could be a police officer, a coach, a catholic priest. their position makes them important and so the general public will look at them and say they could not have done anything wrong because they are so important in our society. when that icon influence happens, it can actually influence in a negative way the investigation. >> you are bringing to my mind, at least, the jerry sandusky case. >> very much present in that case as well as other high profile cases. >> mary ellen, don't you think by now, and i recognize we are all, including you, despite your credentials on outside looking in. don't you think by now, if something came up with the pilots or crew or passen

>> reporter: former fbi profiler mary ellen o'toole says if this is a serial killer, he is someone who has no guilt. he is not crazy, but a psychopath, no guilt, no empathy. he kills for the thrill of it and the reason she says that he kills in broad daylight may be because the risk of getting caught gives him even more of a thrill. >> you lock the door, put the chain on more. >> reporter: now that police have said three unsolved murders in alexandria may be connected for some the feeling is reminiscent of the sniper shootings. >> i'm being careful and i'm not going back into the neighborhoods. i'm staying on the main street. >> reporter: ruthanne lodato was shot to death after answering a knock at the door last month. ron kirby was killed just inside his home in november and 10 years ago nancy dunning was killed in her foyer. the three lived within 2 miles of each other. >> if i lived in that area, i'd be scared. i wouldn't walk anywhere by himself. it happened in the middle of the day. >> reporter: they were all shot with a small weapon. sources say it was a 22 caliber, but police do