Continuity mistake: During the beginning, the sky changes numerous times. In some shots it's just plain blue sky. In others it's full on cloudy. It goes back to sunny when the kids leave the school. Also you can tell some shots were filmed later in the day. Use the sun angle to see this.
Continuity mistake: In the beginning after the teacher is shot the Russian shoots into the classroom. During the first view you see all of the students ducking and right before they cut to the next shot there isn't a dead kid on the window but when they come back to that shot there is.
Continuity mistake: The license plate on Daryl's (the mayor's son) shot-up Pontiac is J5-40T3. In the next scene, the Chevy with the bumper sticker has the same license plate.
Continuity mistake: When the small band of troops comes up the mountain to take pictures and read the sign, one of them snaps a photo of the view. We see a static shot of what he is looking at, trees covered in snow and fog in the valley. Later however, we see the same view. There is no snow on the trees and no fog down below.
Continuity mistake: After the pilot's funeral, Matt walks through some grass to talk to Jed. In all of the previous shots and most of those after, there is snow on the ground because it's January. In this particular shot however, there is no snow, not even on the mountains behind them.
Continuity mistake: The scene with two of the main antagonists talking in town about the Wolverines and Vietnam starts in the shade. Right before the explosion, the two men are now standing in sunlight.
Continuity mistake: When Jed shoots Colonel Strelnikov near the end of the movie, the Colonel drops his gun but is holding it in the next shot.
Continuity mistake: After the helicopter attack where Toni and Robert are killed, the Russian helicopters land about forty feet apart, the officers get out and walk to meet each other at the halfway point. For the rest of the scene, they are right next to one of the helicopters. (01:38:30)
Chosen answer: I was one of the actual paratroopers in the movie. There were at least two different companies providing the extra's. The company that provided the actual paratroopers was Delta Productions, Inc. owned by John Early who owned the Parachute Center in Albuquerque, NM. John was a former Green Beret and professional soldier and was hired to be the technical adviser to the film. As far as I know, Delta Productions is no longer in business. The other company that hired extras provided the non-paratrooper extras. I do not have any information concerning that company but I do know that most were locals who lived in Las Vegas, NM. I know this because I met one of them in the Marine Corps years later. To answer your actual question, I have no knowledge if that information was kept other than those companies that hired them.