I see it's a bug that's been noticed by others a well from a diffrent site : http://fallout.wikia.com/wiki/Come_Fly_With_Me
"If you complete the quest, and the rockets fly succesfully, sometimes Chris Haversam will just stand there and tell you that the great journey will soon begin."
Does anyone know of a fix? Or a way to make sure this dosnt happend? I dont mind going back some saves to get it solved.