Sosig detecting mechanics

[Vernich]

I think that sosigs should be able to detect dropped magazines and clips (and casings if they don't despawn). If a sosig finds one of these they will go into their investigation state, and maybe even call for backup.
Speaking of backup, this new sosig mechanic would allow them to reinforce an area. Say you are raiding a supply point. After a certain amount of time, those sosigs that are alive will try and call for backup. A voice line will indicate that back up is coming. If you ambush a squad of sosigs and they all die before they can call for backup, less sosigs will come and much later.