Plays music from Mission Impossible when the early ship leave alert appears. The volume of the music also reacts to your current location and gets quieter if you're crouching.
but it has a scripting system that allows you to completely redefine how the mod behaves, you can replace the music and create new events for when music should play.
All the logic that drives the music playing is scriptable, meaning you can make entirely new logic for the mod and make it play whatever you want whenever you want! See the Wiki for more information on scripting.