Your right, he did only fire his weapon 4 times before reloading, why ? I have no idea, the reload animation is done like that for playability reasons, too longer reload will leave you unprotected for that amount of time it takes to reload, speeding it up as the did allows you to be back into the game as quickly as possible. The reload animation in DoD is WAY too long for my liking, but it is realistic, so thats something I'll have to put up with, just like you'll have to put up with the difference in this game. And Apparently the weapon sound are from actual weapons, they were recorded by EALA (whos doing the sound for the game) I think the firing of the weapon when he gets out of the higgins boat was maybe just for effect, seeing what it looked like when he shoots. Anyone else ??
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Blessed be the Lord my strength, which teacheth my hands to War and my fingers to fight.