So, the major frustration I'm having in ArmA, is trying to locate the source of incoming fire. Being that there are no tracers, no muzzle flashes, and sounds, bullets or engines, sound like they are either 10 miles away, or right next to your face, even through Surround Sound headphones. SOP is pretty much hit the ground any time I hear OPFOR gunfire and pray I'm on the right side of the cover.
How are you supposed to locate an enemy thats firing at you?