The 5.1 remix on the US Blu-ray (and most DVD editions) is missing some sound effects that were in the original stereo mix. For example, there are some thunderclaps missing during the opening credits (most noticeable when lighting flashes are accompanied only by rain). Also, in the following scene, after the security guard's line "Hell of a night, huh? I'll take you down there," the buzzer sound from the door he opens is missing.