Nightbreaker

Called "Advance to Ground Zero" in Australia.

The sound of Atom Bomb detonations is heard in the movie at the same time as the bombs are going off. This is in fact a common mistake in many movies depicting nuclear detonations. Depending on the distance of the blast, first you would see the flash of the bomb going off. The sound of the blast would arrive at the same time as the shock wave from the detonation. After all, light travels faster than sound (which travels about 343 m / s in the dry air).