They could have teleported out of the helicopter once the door was open. At that point there would have been a gap in the dampening field or it would have been deactivated.
[Edit] Beaten to it.
As for the aging, why do they have to keep jumping ahead 10 years with each movie? Are they anxious to get us to the present?
[Edit] Beaten to it.
As for the aging, why do they have to keep jumping ahead 10 years with each movie? Are they anxious to get us to the present?