Overloaded Backwash

In the Halo 2 multiplayer level Backwash, there is a glitch called the Overcharge Backwash which is very easy to be done. First, go to one of the bases and change your weapon for the Sentinel Beam, change the Sentinel Beam for another one; wait a few seconds and another Sentinel Beam respawns with the previous Beam in the map. Repeat the process any time and if you move the Sentinel Beams with an explosion, they will disappear.