paul cianca a 23 year-old man who was dropped off yesterday morning at lax plier tx prior te shooting. walked into the prescreening area and pulled out an assault rooifl anrifle and killing a ts. the spe suspect went on an he escalator. three people were shot and two tsa workers and one passion injury. one -- passenger. brian rooney, what more have we learned? some of the details that came out of the press conference. he is not able to talk yet. what his mental condition was before the shooting. did he have new diagnosed problems that anyone knew of where did the gun come from and how did he get it did anyone know he had it. there are answered questions and more unanswered questions and the fbi said they will build a full profile of cianca as this goss goes along. >> the other thing who took him to the airport. they say he was dropped off at the airport. >> he had friends and room-mates here. i would count that as a neutral fact. not necessarily the person that dropped him off may have just dropped him off at the airport and may have known nothing about this. his friends told reporter