Baby aliens parents return to wreak havoc on the city holding it captive.
During a flashback scene, when the aliens invade the lower sector of the base, a woman says, "They're here," in a tone similar to Heather O'Rourke's.
Time travel/time altering device
Towards the end Milly starts to fade away, similar to the instances in Back to the Future.
the films alien uses a human telepathically to speak.
VHS/DVD release reviewed + footage used