Honestly, I'd be surprised if it wasn't in the game. That scream is in EVERYTHING where people scream.
LOL, I'd like to set that as my default for everything. Need a medic! - Wilhelm Scream Need ammo! - Wilhelm Scream V + 6ing (taunting) someone - Wilhelm Scream Just died - Wilhelm Scream
are you sure you aren't going crazy? i dont see any Wilhelms around here.... and for those of you who dont know, this is the Wilhelm Scream
If this isn't in the game it needs to be. Should be really rare though, like 1 in 100 deaths someone will make this scream. Probably even more considering how frequently deaths are.
I bet my hat that somewhere theres Hollywood instructor teaching how to do the scream for modest compensation.