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Revealing mistake: A Decepticon ship crashes into and destroys a fair amount of the Tribune Tower's steeple. Later, a wide shot of the city shows the Tribune Tower with white blocks composited on top of it. The animators forgot to put the damage into this shot.

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Factual error: While trapped in the toppling building, our heroes use bundles of computer cabling to keep themselves from sliding out. While bundles of cable are common around the US, they are against code in Chicago, which requires them to be in conduit in a plenum ceiling. Conduits would have easily prevented the bundles from crashing through an acoustic ceiling. And yes, that is a plenum building.

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