Continuity mistake: In the final chase scene, the yellow Hummer starts out with an open sunroof. As it barrels through the shantytown, interior shots of the Hummer show it with a large overhead bank of storage compartments, while overhead shots show the sunroof. When the chase finally reaches Gitmo, the Hummer once again is shown with an open sunroof. (02:11:50 - 02:12:55)
Continuity mistake: When Mike and Marcus are being chased in the Hummer, the windshield gets cracked. During the entire scene the windshield goes from being cracked, to being new again, to being cracked, etc. (02:11:20 - 02:16:20)
Continuity mistake: When Mike is driving the yellow Hummer through the shanty town at the end, the side-view mirrors are broken off several times. When the car comes to a rest the mirrors are intact. (02:13:25 - 02:16:10)
Continuity mistake: During the chase scene, Marcus and Mike are being shot at. At one point the car headlight is shot out. The headlight is intact for the rest of the scene. (00:33:45 - 00:35:25)
Continuity mistake: When the good guys steer the small robot vehicle underneath the bad guys' car, there is a shot without the robot under the car, but in the next shot it is there again. (02:05:50)
Continuity mistake: When the Haitians are on the highway, one of the cars fall off and is dragged by a chain and it hits the large black Ford beside it, with just a bridge wall. Then when the thug (the one who says, "Jesus f***") is shown inside the car, there is a Maersk Sealand vehicle there. (00:33:20)
Continuity mistake: In the White Power vs. Blue Power scene, Mike jumps and shoots a bullet in slow motion. While following the bullet, you can see one man take 3 or 4 steps, before the bullet hits Marcus's ass and eventually the guy's neck. (00:09:15)
Continuity mistake: During the shootout in the street, Will Smith does a sharp turn while shooting at the Haitians and ends up killing one Haitian who falls back on a car. A few shots later at a different camera angle, you see the same Haitian man get killed and fall back on the hood of a car. (00:20:00 - 00:31:55)
Continuity mistake: When Joe Pantoliano is circling "tactical narcotics team" after the car chase, check out the circle. When he draws it, both ends meet nicely. Next time we see it there's a curve at the end of one line, and the next time they meet again. (00:38:30)
Continuity mistake: When Syd gets out of the back truck after the high speed chase, she has blood on her nice white suit (probably since the guy next to her in the car was shot in the head). However, when she gets out to talk to Mike, her suit is clean and white again. (00:37:00)
Continuity mistake: After the first car has been thrown from the top layer of cars on the trasporter, the windscreen of the car thrown off is seen to come out. The camera changes and it's back on the car. The camera changes again, and the windscreen pops out for a second time. (00:34:25)
Continuity mistake: After Syd is chased down in her black truck with the money in it, she meets up with Mike and Marcus. As she is talking to Mike, her bangs change positions. They go from down, to put up. (00:37:35)
Continuity mistake: During the freeway chase scene, the windscreen of the car first thrown from the top of the truck smashes out at least three times. (00:34:00)
Continuity mistake: During the chase down the hill, through the shanty town, the bad guy's blue Land Rover's hood is shown smashed and bent upwards several times, but when they emerge at the bottom it is perfectly normal, and in the latched down position. (02:12:30 - 02:16:30)
Continuity mistake: Near the end of the shootout scene in the pink house, Mike starts to bring his gun up to shoot the Haitian through the wall, and the gun is empty - the slide is back. When the camera changes the slide is forward - indicating the gun has bullets inside. He then shoots through the wall killing the Haitian. (00:51:25)
Continuity mistake: In the "white power vs. blue power" scene when Mike yells "Marcus!", he fires both his Glocks. But in the following slow-motion shot, the bullet from the gun in his left hand is nowhere to be seen, although you can see he fires them in the same direction. In fact it probably would have hit Marcus, while the bullet from Mike's right-hand gun scrapes him in the bottom-cheek. (00:09:35)
Continuity mistake: When Tapia is talking to the guy about severing his head then threatens his family, he takes the pictures out of the box and the pictures are facing Alexei, but in the next shot they are facing Tapia, as he turns them around to show him. (01:05:45)
Continuity mistake: When the Haitians have a shootout in the intersection, you see Mike do a 360 degree spin and then shoots the first Haitian in the green, but moments later you see Mike shoot him again. He was already dead. (00:29:15 - 00:30:35)
Continuity mistake: In the chase scene with Syd and Lowry, Lowry's Ferrari has silver brake calipers in a close up shot, but in a following close up they are a different style and red. The rims are entirely different as well. The scene is filmed with two different Ferraris. The original car is a 575M (red calipers), the other a 550 (silver calipers).
Continuity mistake: In the final shoot out Mike is wearing Oakley M-frames with a clear lens, but the lens shape changes three times during the course of the fight, from the sweep lens, to the strike lens, to the heater lens. (02:07:25)
Answer: He was looking through a tiny mirror he was holding in his hand.