After the primary target is activated and the rescue helicopter is cleared for launch, there's an SH-60 Seahawk taking off from the aircraft carrier (presumably the rescue chopper). Instead, the squad are rescued by IAR 330 Puma (Romanian versions of the original SA 330 type). This Helicopter is NOT operated by the US Navy, indeed most of the helicopters in the movie clearly have markings for the Romanian Air Force, who use this type.
The number markings on the American Fighter Jet's nose change between 104 and 114 in different shots.
At the end of the movie when one of the American soldiers is in a tower-like building, he fires a rifle out the window. When viewed from the outside, the soldier has one kind of rifle, but when shot from the inside, the soldier has another kind of rifle.
In the opening sequence a fighter pilot acknowledges cleared for takeoff, presses a toggle on the dash, and a gauge spins up past "1.5" followed by a tail view of the jet taxiing out. However the gauge was clearly marked "MACH", and going MACH 1.5 while taxiing on the tarmac is completely absurd.
At least some of the above ground scenes at the "nuclear power plant" were actually filmed at an abandoned sewage treatment facility. Trickling filters, sedimentation basins, digesters, and other structures associated only with sewage treatment plants are plainly visible in the scenes.
In the scenes for satellite imagery for the reactors, it shows "image analisys" multiple times above the imagery, as opposed to "image analysis".
In the dogfight between the Russian and US fighters near the end of the film, the Russian fighter pilot is apparently enabling his cannon by flicking a switch on the left portion of his dashboard, then blazing away at the US fighter. Shortly after the US pilot maneuvers around behind the Russian and apparently arms his air-to-air missiles with exactly the same switch. The identical shot was used to show both operations in 2 completely different aircraft. This shows up again in another shot in the same sequence when we see a Russian pilot actually hitting the correct Master Release to launch a missile, but on a panel with everything printed in English. He never gets a chance to launch and the same US pilot maneuvers behind the second Russin, arms his missiles with the exact same panel (identical shot used for the Russian arming his) and firing.
On the aircraft carrier, the CO is wearing a ball cap that reads SSN 798, which is supposed to be the designation of the carrier. However, SSN is the abbreviation for nuclear attack submarines in the US Navy, not for aircraft carriers.
Many of the dogfight sequences are from Top Gun. They have merely been color graded to look different.
During the US/Russian jet fighter dogfight sequence, it's clear that both pilots are sitting in the same cockpit set. The view of the seat behind the pilots is identical, even though one pilot is flying a MIG and the other is flying a Tomcat.
When the American is shooting from the tower near the end of the movie, one of the enemy is shot in the head. However, blood spurts out the back of his head before the bullet hits.
When the team is jumping from the airplane, seven people are visible, but in fact there are only six people on the team. The seventh chap is the cameraman who's filming the guys as they are parachuting.
The padding that the stunt guy falls on in the scene where 'The Painter' shoots the guard from the guard tower is visible.