Factual error: When the Decepticons are reviving Megatron in the Laurentian Abyss, sunlight can be seen filtering down on them. The Laurentian Abyss is too deep for sunlight to penetrate.
Factual error: When Starscream and Megatron are shown talking after Sam has escaped, they are supposed to be in New York City. They are actually on top of the "Gas Company Tower" which is in Los Angeles.
Continuity mistake: When The Fallen decrees that the Decepticons will now make their presence known, one of them knocks the flagpole off the top of the eastern tower of the Brooklyn Bridge. A short time later, another shot of the tower shows the flagpole is back and there is no damage.
Continuity mistake: When Megatron heads toward the tower in jet mode, he transforms and seen upside-down front flipping towards the tower before he lands. About a split second when he lands, he faces the other way instead of facing the tower.
Other mistake: In one of the beginning scenes, the time at the bottom says that it is 22:00, which means it would be 10pm in China. In the scene, it is bright daylight, not night time as it should be. (00:02:15)
Revealing mistake: In one of the first scenes with Devastator 'inhaling' everything in sight, there is an SFX shot of some random bystander hanging on for dear life, then losing his grip and being sucked in. During this shot you can see the matte halo around the person as they flail and 'fall'. It is especially noticeable given the general high quality of the effects in the film: by contrast this looks like a cheap effects shot from an old movie.
Factual error: Aside from the lack of an Air Force base in NJ that looks anything like the one portrayed in the film, there are no mountains anywhere closely resembling the ones seen in the distance by the base.
Continuity mistake: When Leo, Mikaela and Sam arrive at Simmons's deli in Brooklyn, note the clock hanging on the wall behind the counter. Between shots the time changes from 10:20 to 11:40 to 1:05.
Factual error: Mikaela hotwires the silver Saturn Astra at the attack at the university. Firstly, she doesn't break the physical steering lock, and secondly, this is impossible to hotwire. It requires a signal from a chip in the ignition key that transmits the signal to the ECU to enable the car to start.
Factual error: The F-16s performing close air support were loaded with orange-colored "captive carry" munitions. These are used for maintaining weight balance on the wings, and are not weapons.
Factual error: During the Decepticon attack on Paris, there is a shot of the Hotel Crillon with the Eiffel Tower in the background. The tower is actually on the opposite side of Paris, making this shot impossible.
Factual error: When Optimus is killed, the fight takes place in a mountainous forest with that was filled with extremely tall trees not indigenous to NJ, much less any surrounding state of the area portrayed in that scene.
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: When Sam rushes back to his dorm room, he paints the first symbol on the Bad Boys poster, then rips the top poster off the wall and paints large symbols on the wall in its place. That poster remains gone in all the following shots except for two, where it is back on the wall above the Bad Boys poster. First when Sam knocks over the microwave and then when Alice fully transforms on Sam's bed. (00:50:10)
Continuity mistake: At the frat party, when Sam uses the cake frosting to write the symbols, in the first shot he writes the first symbol with perpendicular lines aligned with the cake's edge. In a following shot showing more frosting symbols, the original two lines have changed shape and position - none of the symbols are aligned with the cake's edge. (00:33:50)
Continuity mistake: At Sam's dormitory, there is a bathroom directly across Sam's dorm room which has a blank wall beside its door, when he asks the RA to switch dorm rooms. However, when Leo joins him in the hall there is a large framed photo hanging there. (00:28:10)
Continuity mistake: When Sam meets Leo in the dorm room, the bike near the window is not chained/padlocked to the metal bed frame springs. However, when Leo complains about Robo-Warrior the bike is chained/padlocked to the bed frame, but when Sam's parents walk in it's not again. Additionally, the bed frame moves from being in front of the window closer to the corner, to being directly in front of the window fan. (00:25:40 - 00:27:45)
Continuity mistake: When Sam enters his dorm room for the first time (carrying the box), the two large stickers (rectangular and round) are to the right of the two posters on the door, but in the following shots both of the stickers are to the left of the posters. (00:25:30)
Continuity mistake: When Major Lennox throws Galloway off the cargo plane, Optimus Prime's dead body disappears.
Factual error: When Simmons asks the border patrol for the way to the Gulf of Akaba's "dagger's tip", because he suspects the whereabouts of the Matrix of Leadership at the border of Jordan and Egypt, the road block officer has been given an impossible task, because Egypt does not border Jordan. There is a small slip of land and the city of Eilat in between, and Eilat is in Israel.
Answer: After the tomb, he doesn't appear onscreen again. There's no indication as to what happened to him.
JAGwire