Halo Easter Egg - Notice Board

To find this egg play the first level the pillar of autumn, right after you see captain keyes head towards the back of the bridge in the door way will be notice board, on the notice board should be three notices, one that i think says SCOOTERS ARE FOR SQUIRTS NO RIDING SCOOTERS ON DECK, anathor that's selling a ship and one more that i couldnt quite make out.