From the looks of it, you wouldn't be able to anyway. It's just something cool to try but I doubt it's actually effective. You can't even crouch without taking your hand off the trigger.
I meant to post here that my internet connection has been absolute garbage since those jerks from Best Buy set up my dad's wireless internet. I get disconnected to XBL at completely random time, this time during that Hammers match.
Has anyone thought about what it must be like for his Commanding Officer? Everytime he orders his squad to do something he's has to be thinking that he could be the one to get the Prince of England killed.