While games based on the military and wars have made a great many advances over the last several years, they still have an issue when it comes to realism. If you take a round in the chest, in games like Call of Duty 4 or Medal of Honor Airbourne you can simply get behind cover and heal. Of course, things don't work anything remotely close to that in real life. Even games that use health packs instead of regenerative health still aren't exactly tied to reality. So a game like Operation Flashpoint: Dragon Rising will certainly rise some eyebrows with its intense devotion to reality.