Bungie just posted a hot new screen from the much-anticipated Halo 3 single-player campaign. As you can see below, Master Chief is looking stunning in his Mjolnir battle armor. While we're not inclined to the kind of wild speculation that you might expect from forums, we can't help but notice the odd explosion-looking thing in Master Chief's mirrored faceplate. Bungie, of course, is remaining mum, but we'll just file this away in our arsenal of questions that will shortly be discharged on unsuspecting developers at next week's Electronic Entertainment Expo.