In the final scene, when the helicopter is returning from the retrieval mission, Meg walks up to greet her husband, and she has a huge fever blister on the right side of her upper lip. Later, in that same scene, the fever blister disappears.
The Polaroid which terry examines with a magnifying glass shows Peter smiling slightly. The picture Alice & Janice look at has his mouth closed in a grimace (the plot makes an issue of why he isn't smiling in the photo).
Peter and Alice, invited to attend the charity event, can be seen sitting at their table at the party before they even entered the room.
Alice slaps Thorne's left cheek, but when he walks in to the house, he is massaging his right cheek.
When Terry checks out from his hotel because his firm won't be taking part in the negotiations after all, while Alice is talking to him, she is wearing very light/natural make-up. But when they come out of the hotel, Alice is wearing heavy make-up, the most evident example being the purple color of her lips.
The rocket launcher fired by one of the guerrillas is an American M-72 LAW (Light Anti-tank Weapon). Two mistakes are made. When launched, all the propellant in the rocket burns instantly, while it is still in the launching tube. If it did not, the soldier who fired it would be blasted in the face as the rocket leaves the launcher. Since all the propellant has been burned there is no trail of smoke behind the rocket as it flies toward the target, as this movie shows.
The other mistake is that the rocket, which is anti-tank, contains a shaped charge warhead. Such a warhead focuses the blast to a very fine point straight forward in order to blast through armor. In this case the rocket missed the machine gunner and exploded several feet away. The blast would go straight into the ground, creating a very small crater and having very little blast to the sides. It would have had no effect at all on him (other than a very noisy blast). But the movie shows a large unfocused explosion which wounds the man and blows him through the air. That is not the way an M-72 works at all.
The other mistake is that the rocket, which is anti-tank, contains a shaped charge warhead. Such a warhead focuses the blast to a very fine point straight forward in order to blast through armor. In this case the rocket missed the machine gunner and exploded several feet away. The blast would go straight into the ground, creating a very small crater and having very little blast to the sides. It would have had no effect at all on him (other than a very noisy blast). But the movie shows a large unfocused explosion which wounds the man and blows him through the air. That is not the way an M-72 works at all.
The grenade Dino throws into the hut is a noise/flash distraction device, commonly called a "flashbang." Flashbang grenades do not detonate and fragment like antipersonnel grenades, so it would be normal to see the spent grenade body lying on the floor.
Even though the movie takes place in a fictional South American country, the Ecuadorian flag can be seen flying in many places.
Bowman speaks into the wrong side of his Nokia 9110 Communicator.
When two ELT soldiers fly into the air after Thorne detonates a claymore mine, wires are visible aiding the stuntmen.
The marching band drummer, while standing in front of the grandstand.