Please include Earplugs as an Item in game that have 3 options. 1 complete sound reduction reducing all sound level to a predetermined "Max" simulating fully closed cheap earplugs that many receive preflight on nearly all U.S. military transport. 2. An additional built in helmet system (I have seen them before with small slits in over ear protection that were optionally closeable when expecting sustained firefights and CQB situations where your buddies muzzle may be close to your head) that allow in game voice chat to be transmitted to the user at normal levels while blocking out outside noise (like many real helmet radio systems already in use today). 3 no earplugs/temporarily removed with full listening levels so you can recon enemy positions through audio contact (which is also a real tactic). You may not be able to see through the bushes you are hiding in but an enemies footsteps and gear clatter while moving are often very well utilized queues in battle.