User blog comment:Callofduty4/Modern Warfare 3 Launch Trailer/@comment-99.57.15.118-20111022203639/@comment-3361508-20111022203957

If you mean the guy jumping out the window, front a back view, yes. But when you see his face, he's wearing a gas mask, and not the skull balcavala (however you spell it). So.... I'm guessing Wallcroft.