@JohnFromGWN So I checked and in the SCRIPT.rpf there are only sounds from Single Player. I went to mpheist3 (Casino Heist) and I found casino_alarm.awc. So in mpheist4 there is no such a thing.

I need help finding alarm sound in mpheist4 folder. Can anyone help me? Thanks very much.

Last week I played GTA V modded with open IV. And I saw Trevor's hangar disapeared, next second my game crashed. I need some help with that. Thanks.