User blog comment:Helix Armada/Easy ways to get the "Airborne" Challenge in COD4 multiplayer?/@comment-2181475-20100814032244

go to backlot or showdown and do the elevator glitch. i just thought about doing that just now. in backlot, go to the building with the mg on the top right side of the map. get on the stairs and press jump+crouch+jump to do the glitch. from there just shoot people.