All sounds were (obviously) taken from SWAT 4, developed by Irrational Games and published by Sierra.
I do not own the copyright to SWAT 4 and I do not own these assets.
Blah, blah, yadda yadda legal speak.
Download the latest master and dump whatever part you wanna use in your load order.
HD_SWAT4Snd - Weapons, footsteps, etc.
HD_SWAT4Mus - Dynamic music tracks from the game. Requires DoomDynMus.
Also included a track from the Elite Force mod by eezstreet.
Not every track was included, because some of them are extremely short and have very obvious loop points.