A second trailer for G.I. Joe: Retaliation has been released, showing the Joes battling not only Cobra but threats from within the government.  A first look was released in December (see "'G.I. Joe: Retaliation' Trailer").  It looks like the G.I. Joe sequel, starring Dwayne Johnson and Bruce Willis, will get considerable marketing support (see "'G.I. Joe' Super Bowl Ad").  It opens June 29th.