Goofs

When David and Allison are driving through the country, a Porsche comes up behind them which then disappears and reappears in subsequent shots.

Dr. Longstreet is American in the 1943 scenes, but has acquired an English accent by the time 1984 rolls around. There's no indication that he lived in England all (or any) of the intervening years.

After stealing the truck to run the roadblock, a close up of David shows him ducking and hunching down behind the steering wheel just before they crash into the barricade. The view changes to a shot of the truck going through the barricade and the driver is sitting upright.

At the roadblock when they are in the horse trailer, a 1969 Chevy Camaro passes the truck pulling the horse trailer twice in subsequent scenes.

When David is running through the restaurant jumping onto tables, there is spilled food on the floor under the table before he jumps onto it.

The radar antenna shown being used to monitor the Edlridge is associated with an air-search radar, not a surface-search radar.

The ship shown momentarily as the Eldridge (DE-173) at the beginning of the movie is actually the USS Laffey (DD-724), a Sumner class destroyer which looks nothing like a Cannon class destroyer escort. The Laffey is a museum ship in Charleston, South Carolina.

When the Eldridge is given the order to get underway, there's a shot of the engines starting up. The connecting rods of a steam reciprocating engine are shown but the Eldridge had diesel-electric drive. No Navy warships had reciprocating engines since the early 1900's.

Early in the movie an order is given onboard the control ship to tell the Eldridge to turn off its equipment. The order is given to an enlisted man wearing a sound-powered phone who then turns to a 1MC box. Although the order needs to be sent by radio, both of the devices are only for internal communications on a ship.

The hospital elevator cars and doors are too small. They must be large enough to accommodate a patient on a gurney.

David and Jimmy don't know how to drive Allison's car, which has an automatic transmission, and they claim never to have heard of an "automatic" before. The first mass-produced automatic transmission was introduced by General Motors in 1939, two years before the United States entered World War II.

While it is true that GM introduced the first automatic transmission in 1939, it was only available on GM's most expensive models (Cadillac & Oldsmobile) and was a very expensive option. In addition, they would only be produced for two years before civilian auto production would be suspended in early 1942 "for the duration" of the war, further limiting availability.

When David and Allison are being chased from the Parker ranch, a vehicle flips, exposing the flipping device in two different shots.

When David pulls into the Texaco station, the service bell rings but there is no cord on the pavement to drive over.

When Allison and David try to contact David's family members, the rotary dial telephone in the hotel room has no cord.

No way would the burnt hand sailor of 1940 have pierced ears which is clearly scene in the first restaurant scene.

A clerk at the base types on a keyboard and at a later time the same keyboard reveals itself to be a Commodore 64 (or similar) without a monitor.

David and Jimmy's hairstyles are not characteristic of those found in the 1940s, particularly for sailors. This is also true for several of the other men seen during this time period in the film.

When the sailors arrive at the pier in the beginning, the white ship seen in the background is the NS Savannah, the world's first nuclear powered cargo ship. The NS Savannah was not launched until 21 July 1959, 16 years after the first experiment in the movie.

At the 1940s dance in the opening sequence the camera shot from under the hi-hat cymbals of the drum set shows four holes in the flat (no bell) bottom cymbal. Those are Zildjian Quick Beats hi-hat cymbals and were not available until the late 1970s.

Use of Vietnam-era M-151 jeeps and trucks in the World War II scenes.

As the sailors are heading for the Naval Base in the beginning, they cross a Bridge. Modern day street lamps can be clearly seen.

When the helicopter crashes they use footage from the end of shooting for the fire scene, hence a helicopter looks like a car and buildings on fire.

In the beginning of the car chase, in the barn, there are shadows of camera equipment visible on David and Alison's car. Later, out in the fields, the helicopter shadow is seen from time to time.

Skid plates to protect underside of vehicles are clearly visible, especially when MP is being taken out of overturned vehicle in orchard grove chase scene.

As Sailors are being driven on trucks to the "Philadelphia Naval Shipyard" they pass through the base with several live oak trees dripping with Spanish Moss - which is a dead giveaway for Charleston, South Carolina.