Continuity mistake: After David has gone through the vortex, he grabs an axe and starts to hack some of the equipment. In the next close-up shot he stands at the doorway without an axe in his right hand, but in the next wide shot the axe is back in his hand. (01:31:50)
Continuity mistake: As David runs from the MP's in the restaurant he jumps down onto the bar from the second floor. The shot of the bar from above and the shot of him landing on the bar differs in regard to the items on the bar and placement of people. As David runs onto the first table from the bar, the food on the plate belonging to the man in the brown suit differs in the next shot as the man ducks to his right. (00:45:40)
Continuity mistake: At the hotel when Allison knocks on the door David goes to open it, and the round table's 'folding sides' face a particular direction. In the next shot Allison puts the shopping bag on the table, and the 'folding sides' of the table are facing another direction. (00:48:50)
Continuity mistake: In the Doctor's office at the hospital, David and Allison sit in front of his desk. In the shots facing the Doctor the silver lighter is on the desk. In the shots facing David, the lighter is on the pack of cigarettes. (00:41:05)
Continuity mistake: Dr. Longstreet, in 1984, is in his office near the black file cabinet. Before he gets the files on the U.S.S. Eldridge, in this shot the plant is right next to a set of files on top of the cabinet. Once he removes the files he wants from the drawer, in this shot the plant is at the wall, further away from the files up on top. (00:32:50)
Continuity mistake: After Allison's car rolls down the embankment, in the first shot there is no snow on the roof of the car. In the close-up of the car, as the police draw their guns, there is now snow on the roof. (00:35:05)
Continuity mistake: When Dr. Longstreet approaches the scene of the chopper accident, in the wide shot his scarf hangs straight down. In the next close-up, his scarf is folded one end over the other. In the next wide shot, his scarf hangs straight down again. (00:22:15)
Continuity mistake: As Allison drives searching for David, who's on the run from the MP's, the windshield wipers are on. In her two close-up shots in between, the wipers are not on. (00:45:55)
Factual error: In the scene where the convoy is on the way to the Eldridge, the trucks used are M35 deuce and a half dating from 1949, the jeeps used are M151 mutt dating from 1959 (horizontal grills) . (00:05:55)
Continuity mistake: David and Jimmy are running from the military helicopter, when they run into an electrified fence. Jimmy actually hits it and in the first shot he grabs hold of the fence with both hands, then he *removes* his right hand only to put it *back* onto the *electrified* fence. In the next close-up shot, Jimmy is standing at a different place along the electrified fence, this time right near the pole and Jimmy's left hand is now lower on the fence than it was in the previous shot. Then in the next back shot, Jimmy's left hand is higher up on the fence again. (00:17:05)
Continuity mistake: David and Allison pull up to the corner across the street from David's father's old place. In the close-up of them in the car, the surrounding area around the car is completely different than the area shown around the car in the wide shot. Also in the wide shot we see cars parked to the right of the screen. After crossing the intersection, they pull into his father's old place, and we see the same sidewalk across the street, but none of the cars that were parked there in the previous shot are there now. Then when they pull away, again the parked cars are different. (01:02:20)
