ET will premiere the first trailer for the 2012 summer blockbuster, G.I. Joe: Retaliation, on tonight’s show. But before unveiling the preview, the media program gives us a sneak peak of what to expect. Big guns, explosions, and the continuous overexposure of Dwayne “The Rock” Johnson and Bruce Willis. Damn, can the star of the first film, Channing Tatum, get some love? Oh well. Here’s a tease of the trailer.