can some 1 help me with some funny things

[death526]

ok well im making a gun so when u shoot it targets all ur teammates n then a red beam attacks them from the sky and hits the ground then it sends them flying when they die and im trying to edit the sound of mc
so that when he dies (usualy u hear urrrg or somethin like that) i wanna change it to when he screems yaaaaahooooo because i have heard him scream it in campagin mode when i shot the fuel rod cannon at my feet but i have only heard it once b4 so if any 1 can help me find what that sound tag for mc's screem is plz help me