Factual error: In the first scene, when Sylvester Stallone is in Colombia, the city that is named is Bogota. But that is impossible, Bogota is a metropolis of 7,000,000 people, one of the largest and most developed cities in South America, not a jungle.
Factual error: Near the end of the film, after Ditch and Krista use the reserve parachute, they fall in a windfarm. The windmills are spinning fairly slowly. After the fight Ditch pulls Pinkwater's parachute out. The wind pulls Pinkwater back towards the fan. Before he gets chopped up there is a shot of the fan blades spinning very fast and powerfully. A light breeze would not cause these blades to spin in this fashion. A hurricane would be needed for those blades to chop up a human.
Factual error: In the film, John Lennon sings "Long Tall Sally" when it was actually Paul McCartney who sang/recorded the song.
Factual error: Under the rules of Major League Baseball, a team owner cannot also serve as the team's manager; it constitutes a conflict of interest.
Factual error: When Snowflake is being stolen at the beginning, he makes the high-pitched noise that dolphins make even when he is out of the tank; those high peals are made underwater through carrying sound. He wouldn't sound the same out of the water as he did under it.
Factual error: Paris was surrounded by the German army on September 20th 1870, until January 1871 due to the aftermath of the Franco-Prussian War. This was an obvious danger after the defeat of the French army on September 2nd. No-one in Paris, however, seems to notice. (01:10:25)
Factual error: It is physically impossible to snow machine from the arctic circle area to Valdez in one day, as Steven Segal does.
Factual error: In the first scene of the movie, a diver is underwater, and he is talking to someone on the radio. How can he talk, when he is biting down on the mouthpiece from his scuba tanks? And his mouth is obviously not moving. (00:00:40)
Factual error: When Pauline makes her first entry into her 1953 diary, the date at the top of the page is January 1, Thursday. Later in the film when she begins her diary for 1954, the date on the page is January 1, Thursday. The same date in two consecutive years cannot be the same day of the week, they are a day apart (2 in a leap year). In actual fact, 1 January 1954 was a Friday. (00:24:20 - 01:03:45)
Factual error: We are told at least twice that the airport scenes take place at Newark International Airport (now Newark Liberty Airport) in New Jersey, but one shot shows a sign that reads "Bienvenue a Montreal," showing where the scene was actually filmed.
Factual error: When Mark and Reggie are fighting over whether or not to go to New Orleans, Mark starts walking toward the Memphis-Arkansas Bridge. There would be no need to cross that bridge as New Orleans is due south on Interstate 55. The Memphis-Arkansas Bridge is Interstate 40 and goes to Little Rock, AR or north to St. Louis.
Factual error: The grenade that the SWAT team fires in the hotel is supposedly a smoke bomb, but it is both marked ILUM and has a white body, meaning that it is an illumination grenade.
Factual error: When Eric goes to help the guy who got hurt after bungee jumping at the dance, the guy's line is long enough to allow him to lay flat on the ground. If it was really that long he would have crashed into the floor and not gone back up.
Factual error: When Vincent shoots Marvin the bullet goes through Marvin's head and exits out the back of his skull with explosive force - enough to splatter "pieces of brain" all over the back of the car. If it exited with so much force the rear window of the car should have shattered from the bullet, but it doesn't even get chipped.
Factual error: The graduation scene would have you believe that they are at Harvard. They are actually at the University of Illinois at Urbana-Champaign on the main quad in front of Follinger Hall.
Factual error: The girls stop at a grave site, and the marker indicates the husband had died 3 years earlier, in 1888. Yet, later on, Cody tells Frank that they're going to the "Oregon Territory". Oregon had been a state for over 30 years by that time.
Factual error: The Indiana plate on the rich guy's car had an incorrect serial number. The "Amber Waves of Grain" plates had the format 1 or 2 numbers (county code), then a letter in small font, followed by more numbers. The plate on his car was all numbers.
Factual error: While Gary Busey is breaking out of prison, he crawls over a small wall (it is no more than four feet high). However, he takes great pain to swing his legs and body over to the top of the wall, and then is momentarily stuck on top, before finally getting over. For a member of a special ops team, he is clearly out of shape.
Factual error: The comet is seen to move rapidly across the sky. This in actuality never happens as they are so far away. The speed shown in the film is more appropriate for a shooting star.
Factual error: During the battle scene the voiceover says that it is February 1915. The battle being portrayed is obviously the Second Battle of Ypres because it involves Canadian troops and it's the first time that gas was used in the war. The actual battle didn't take place until the end of April 1915.