a powder keg. >> this is vern gosney dragging his belongings toward the departing truck. he tried to warn the congressman they were all in danger. >> he told me i had the congressional shield of protection over me and that i had nothing to worry about. i thought he was totally out of his mind. >> congressman leo ryan carrying the briefcase had planned to stay the night to help get more families out. then a church member came up behind him. >> and all of a sudden he puts a knife up to his throat and he says, all right, mf, you're going to die. we all jumped on him anyway. we all got the knife away. >> you can see blood spatters on his shirt from the attacker, not ryan. the ride to the small airport at port kaituma was slow, bumpy and tense. >> and you could just sense the fear in everyone. you could just feel it like it