Okay, so in Ambush, if you go inot the back, there will be a turret. Thats where the glitch will start off. First, you will see a mattress, jump on that and make your way over the turrett once on the wall. Once on the wall, point your croasshairs on the turret and it shold let you get on it. On your screen your on the turret and everythings normal, on other;s screens, you are on top of the wall where you were when you started the glitch. Very cool and can be used in real maps the other guys is very confused.lol