Corrected entry: At the beginning of the film when Nic Cage takes the firefighters into WTC 1 after a couple of minutes have gone by, Nic Cage is told to evacuate the building from his radio, he radios back saying "is there something happening with tower 2?". Just after he says this the building he is in collapses. This is a factual error, we all know that it is building 2 or the south tower that collapses first, not building 1 or the north tower.
The-Immortal
12th Nov 2007
Correction: Cage and crew are not in Tower One. They are on the concourse, beneath and between the two towers, headed toward One as firemen are heading from One to Two. They discuss that only one plane has hit, not two (which is some of the bad info that was going around at the time). They also know about the Pentagon attack (9:37am), so it's well after that. Cage asks the firemen if something is happening at Two because he's unaware of the second plane crash. Then, Two collapses (9:59am) and the falling materials come straight down, then move outward all around at ground level and below, in the concourse. Note the debris is flying sideways before some collapsing of the concourse occurs. It's that collapse that traps them in the concourse, not under One. About 7 minutes later in the film (29 minutes real time), Tower One falls, and they are again battered by debris while trapped. No mistake.