Whats up with the mix-matched armor sets in Halo 4? One is olive drab metallic armor with a face mask, another is mostly white and appears to be made out of more fabric like material and the other one is the same thing as the white except for the fact that it is black? (ODST's Maybe)
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Marines and Spartans have tags seen through neural implants so there shouldn't be a problem identifying who's who.