As the lady merc is having her facial bandages removed, the gauze around her mouth is just a single layer with a thinner paler-white visible-weave appearance, yet in a later close-up facial shot, the gauze around her mouth is several layers thick, and thus looks a solid opaque white.
The motorhome is travelling on a regular two-lane rural road, yet in one shot, the centerline is white, as in a divided-lane interstate highway.
Steve tips the canister on its side and runs with it, so all that wobbling and jostling would have caused the chemicals inside to mix, yet the two fluids are shown still unmixed in a close-up shot during the helicopter chase.
The RV's backup lights are very noticeably lit as it is shown finishing crossing the bridge; obviously reversed footage of the RV backing across the bridge.
Steve swerves the motorhome to avoid a head-on collision with the erratically driven car, yet the dashed lines on the center of the road are white, indicating that the entire road is a two-lane half of a divided interstate-type highway. So all traffic on this road would be travelling in the same direction, with no oncoming traffic.
In the close-up shot of the bullet's supposedly hitting the nuclear fuel cell canister and chipping the rim, a small pre-scored section of the canister's rim is visible, and the effect from the small blast that comes from inside the canister that pops out this pre-cut section is also quite visible.
The cable that Steve grabs to stop the falling elevator is clearly not moving at all in the first shot, even though it is shown moving rapidly and making smoke in Steve's bionic hand in subsequent shots.
The motorhome's 2-way radio was back on the "original" frequency (Channel 5, not Channel 7 where the lady merc had secretly switched it for a moment to converse "privately" with her
accomplices while Steve was outside checking on the air conditioner) when the mercs sent their "impersonating of OSI agents" transmission about the helicopter's pulling out, so the real
helicopter pilot would have heard the mercs' transmission and known there was trouble.
The revolver that the lady agent picks up to practice marksmanship with is obviously a large full-size weapon that would be able to fire at least six rounds, yet only five shots are heard before she sets down the gun again.
When Steve is getting chased by the helicopter the camera crew is at one point clearly visible on the far right of the screen.
An experienced counter-terrorist agent like Steve should immediately realize that the second elevator might also be rigged to explode and fall just like the first (especially since the mercs could not have known which elevator Steve and Frank would take, and so they would likely have rigged all of the building's elevators with bombs fitted with different-frequency radio-operated detonators, and had a multi-frequency triggering-remote to set any of the bombs off individually, to allow themselves the option of selecting and hitting the correct elevator), so he would not have used any of the other elevators to reach Frank, since this other one could have sent him plummeting, too, just as Frank had gone down. Instead, Steve would have used the stairs or some other means of reaching the ground floor to check on Frank.