Deliberate mistake: The nose pieces on the face masks have been removed from all of the SCBAs used in the movie. The nose pieces are essential to keep the mask from fogging up, but were removed to allow the audience to see all of the actors' faces.
Ladder 49 (2004)
1 deliberate mistake - chronological order
Directed by: Jay Russell
Starring: John Travolta, Joaquin Phoenix, Robert Patrick, Jacinda Barrett
Continuity mistake: In the scene where Jack and Lenny are arguing about Dennis's death, the cup on the table gets knocked over. The next shot, the cup is standing up. The next shot, it's down again.
Chief Kennedy: Hey! What the hell is going on in here! Huh? I come back from tellin' a mother her son is dead, and this is goin' on, in my house, in MY house! We deal with this by stickin' together. We take it. We learn from it. And we get back on the god damn truck and that's how we honor Dennis. You got that? Anyone think about lowering the flag? Do it.
Trivia: In the original script the movie was supposed to be set in New York City, but after the September 11 attacks the location was moved to Baltimore.