How to glitch under the map on redacted. very easy.

You need 1 team mate with you. Be the guy with the grappling launcher. Get up above the top rails in the fan room, slip down the back, lay in the corner tight to the wall, furthest from the fans. Get ur team mate to spawn on you, then get him to just run and jump over your laying body. Done! This works 100% easy every time.