Hey, on the level Below Freezing Point, I can't figure out how to turn..

If you have yet to defrost the whole area, you first need to collect the key card what is near the turn table. Once you have that head all the way back to the closed shutter and use the keycard on the cardpanel. Once you have done that head inside the room and collect the blow torch, run out of the room and head to the room with the enviromental controls. You will know the room since it has a broken shotgun and a frozen man in there. Use the blowtorch on the handle to turn on the heating. Once you have done that head back to the turntable and use the key again to activate it. Now if you have already done this and are asking just how do you turn it, answer is you don't you just wait for the timer to reach 0 for the turntable to move. If you find yourself being killed all the time climb onto the back of the train and wait, for maximum points try and save your teammates.