Factual error: In the nighttime hostage rescue scene, the rescue helicopter has its right and green navigation lights on, which are designed to show other aircraft where it is and which direction it is heading. This of course would not be the case while staging a clandestine operation in hostile territory.
Character mistake: The Captain of the team breaches a door and engages the sniper with her rifle, however it's dry and her weapon just clicks twice. Being a highly trained soldier she should have known her weapon is dry. She's using a IWI Tavor, which has a bolt hold-open mechanism after the last round is depleted from the magazine just like an AR-15 or a Glock handgun. Even if she had 10 rounds in the magazine she should have done a tactical reload since she's entering a new room with unknown hostiles. (01:14:00)
Other mistake: A panel wagon stops in front of one of the Syria team participants in Atlanta. A man gets out and starts firing a rifle at the team member's car. The sound is of 14 rounds fired, but there are only nine muzzle flashes shown. Also, the bullets do strike the windshield, and some of them show pock marks, but none seem to go through the windshield. (00:11:35)
Other mistake: After completing a CIA sponsored operation in Syria, a helicopter comes in to exfiltrate the team. It lands and also takes off with full navigation lights and red beacons on. This would never be done in a combat area. Those light should have been off the entire time. (00:06:55)
Deliberate mistake: The Glock pistol the dying Russian assassin attempts to fire clicks, symbolizing it's out of ammo, or had a malfunction such as failure to ignite primer which is extraordinarily unlikely. His action symbolized a dry weapon. When a modern handgun in particular a Glock runs dry, the slide stop lever engages the slide and leaves the slide open until a new magazine is inserted and the slide is racked or the slide stop is pushed down. On a dry Glock the trigger can't be pressed until the slide is cocked. (00:16:45 - 00:17:30)
Factual error: It's revealed the sniper weapon being utilized against the Seal team was a Barrett M82 50 caliber (50 BMG). The sniper first exposes himself when he wounds a Seal in the lower back, it appears. A 50 BMG would evaporate the subject and turn rip his torso from his legs, it would look like a red mist of blood. Plus those rounds can punch through bricks and concrete which the team is taking cover behind. Maybe not the first round but the second or third for sure depending on concrete strength. (01:14:00 - 01:14:30)