Here is a list I have done with the DM's.
When we got them, we all ran and shot all the batteries in the spawn room.
When we got them I ran to shoot the chained door under JUG.
When we got them I ran to the door by PAP and shot at it.
I tried to use the lander before and during the screen went all black and white.
Shot the teddy bears.
I believe thats it and nothing happened.

Also, the last time we tried to get the DM's we accidently threw 2 gersh devices at the orb and just shot at it anyway. The outcome? Two orbs went up in the sky. That is when I decided to ride the lander when the screen turned colors. When I landed, everyones death machine went away (It lasted like a normal one) and everyones gun that they didn't have out was gone, all grenades were gone, all secondary grenades were gone, and we couldn't buy the box or a weapon off the wall. But when someone got downed and got picked back up, they got all their stuff back. Glitch or easter egg? I'm leaning towards glitch but I just thought I would share.