In the climax to the film, literally hundreds of spectators/extras are seen to be lined up against the Hotel Barbazon's railings to witness the confrontation between police and the hostage-taker, but under normal. security procedure, this would not be permitted as such spectators could potentially be in harm's way from stray bullets. Any such spectators or bystanders would be cleared away and told to return to their rooms.
During the final confrontation with the hostage taker, several rifle-toting swat-team police officers are clearly seen to be aiming their weapons during nighttime darkness while concurrent scenes are clearly shown while it is still daylight.