Channing Tatum's Duke was one of the main heroes of 2009's "G.I. Joe: The Rise of Cobra," but rumors (and the trailer) suggest that Duke doesn't make it past the first reel of "Retaliation." Often a favorite target of critical fans, Tatum may suffer a grisly onscreen death this time around, which would be sort of a bummer now that he's finally loosening up onscreen (witness "Haywire" and "21 Jump Street").