Continuity mistake: When Jetfire tries to leave the James S. McDonnell Space Hangar and says, "I command these doors to open," there is a shot of Sam, Mikaela, Simmons and Leo standing at the tip of what was Jetfire's enclosure bars, looking up, a bit to their right as if Jetfire was directly in front of them. In the next shot Jetfire, who is way down at the end of the hangar, breaks down the door and heads out. Next shot, they're all still looking up in the very same direction, even though they should be looking all the way to their right, straight ahead into the distance. (01:23:40)
Continuity mistake: When Sam and the rest are chasing after Jetfire, explaining that they just want to talk, during their conversation Sam's arms repeatedly go from being raised way up or being down, depending on the camera angle. (01:24:20)
Continuity mistake: At the aircraft 'boneyard', Sam uses a dagger to carve a huge circle of symbols into the ground, and in the first close-up Sam finishes up a specific symbol at the top of the circle, sticks the dagger in the dirt and stands up. In the next overhead wideshot, Sam is not only still kneeling and then stands up again, but he was actually kneeling at a different symbol located at the bottom of the circle. (01:25:50)
Continuity mistake: When Sam has carved the circle of symbols into the ground, the aircraft behind him casts very different shadows upon the ground right up until everyone vanishes, when the cloud of dust caused by their disappearance appears. (01:25:55)
Continuity mistake: In the scene where everyone arrives in Egypt, when everyone is standing around Jetfire, there is a wide shot showing everyone and you see Mikaela sitting down wrapping Sam's hand. Then she stands up in that same shot, and it cuts to a close up that shows Mikaela sitting down again wrapping his hand. (01:27:45)
Continuity mistake: In Egypt, the protagonists are being chased by the police. At first the cops are driving an Alfa-Romeo 164. A moment later they are driving a Peugeot 405s. (01:32:00)
Continuity mistake: In Egypt, when Sam says, "We got cops!" they're at a fork in the road, and with two police cars heading towards them from the left of the 'fork', Sam drives to the right of the 'fork'. However, in the next shot, the two police cars are driving past Bumblebee and the twins on the very same road, just before the police cars make their U-turns. (01:35:55)
Continuity mistake: When Leo is freaking out in the back seat of the car, Simmons, who is in the front seat, pulls out the taser to use on Leo and holds it in his left hand as he turns around. Yet in Leo's close-up, as he's being zapped, the taser is in Simmons's right hand, but next shot the taser is back in his left hand. (01:46:55)
Continuity mistake: When Devastator is sucking up the vehicles and structures at the construction site, the large camper's exterior is pulled off, leaving only the frame as the camper is pulled forward, but a few shots later, in an overhead wideshot that camper is still intact and straight, as Mudflap and Skids stand firm. (01:56:55)
Continuity mistake: At the start of Bumblebee and Rampage battling it out, Rampage knocks a car over onto its side (perpendicular to the car that's beside Ron and Judy). A few shots after the close-up of Bumblebee dropping his yellow faceplate over his face, that car gets overturned again behind Mikaela, though in between there are shots of the car already on its side. That car is down yet again when Bumblebee is attacked by Ravage, and then on its side again when Sam pulls Mikaela by her hand. (02:00:20)
Continuity mistake: When Bumblebee is battling Rampage, there's a close-up of Bumblebee as he dramatically drops his yellow faceplate over his face. In the next shot, Sam is on the ground in front of the car on its side (Rampage overturned it moments before). Problem is in the next shot Mikaela is also in front of that very same car, but Sam is gone, and she wasn't seen in the previous shot of Sam either. (02:00:30)
Continuity mistake: When Simmons is on the radio with Captain Wilder, who is aboard the USS Stennis, the radio cord around Simmons's neck is either over or under the flight jacket's fur collar, and then in the last shot the cord is suddenly off. (02:05:15)
Continuity mistake: Devastator demolishes a fair chunk of the top of the pyramid. In the shot where it falls down after being destroyed, the top of the pyramid is still intact. (02:11:20)
Continuity mistake: In the scene where Captain Lennox pulls Mikaela from Sam after he has been blown away, you see her lying on the sand with the right side of her bra cup exposed but when you see her again her top is in the right position. (02:12:40)
Continuity mistake: When Lennox is trying to revive Sam, there is a close-up of the sock starting to slip out of Sam's grasp, but it's still in his hand. Then when the medics are using the paddles on Sam, clearly there is nothing in his bandaged hand. The problem is that there is another close-up of Sam's hand, after Mikaela professes her love, and the sock is still there in Sam's hand before it dramatically falls (it's the same close-up angle as the previous shot). (02:13:40)
Continuity mistake: At the end, in the first aerial shot of the aircraft carrier, only a huge number '7' is imprinted on deck, but after the close-up of Mikaela and Leo there is also a huge number '4' imprinted on deck beside the '7', that is seen as Optimus and Sam stand beside one another. (02:21:25)
Continuity mistake: When Mikaela and Leo are in the silver Saturn, as Sam is hanging onto the passenger door, the rearview mirror is broken and hangs from the windshield, but is then intact once again.
Continuity mistake: While Mikaela and Sam are running through Egypt, they both take off their jackets. Sam drops his jacket, but in the next shot it's in his hand again.
Continuity mistake: When Lennox is demoted his rank is ripped from his shirt, but when he turns around his rank is back where it was originally.
Continuity mistake: In the scene where Sam is on the phone and explaining his hallucinations in college, he drops his papers on the stairs and there is a man that passes him. When they change the shot, the man is behind him again walking from the top of the stairs.
Answer: After the tomb, he doesn't appear onscreen again. There's no indication as to what happened to him.
JAGwire