Another Day at the Beach
From Halopedia, the Halo wiki
Another Day at the Beach is a bonus clip on the Multiplayer Map Pack. It explains what happens to the other Pelican after being shot down by the Scarab before the level Outskirts.
Synopsis
The Pelican flies over Hotel Zanzibar and is seen by an Elite. He walks within sight of the Pelican and sees the suvivors walking around. He sends in two Grunts to engage them and a Jackal sniper up into the buildings. As the ODSTs turn a corner around a rock, the sniper almost kills one of the Marines. He tells the sniper ODST, who kills the Jackal with no casualties. The body falls right next to the Grunts causing them to run scared towards the Elite. The first one gets by, but the sceond one is picked up by the throat and thrown. The Elite then takes a sword out and turns invisible. The Elite takes the sword and slashes at a ODST. He falls and picks up a Plasma Pistol and begins charging it. The ODSTs are walking and a Plasma Grenade sticks one in the helmet. He removes the helmet and throws it in the air. It explodes next to the Elite so that he becomes visible. The Elite jumps at the ODST and has it in a hostage position using its sword. The plasma shot for the charged Plasma pistol takes out his shield, and then a Battle Rifle finishes it off. Then they hear Cortana telling them to stay put after the Master Chief took out the Hunters in the courtyard.
The ODSTs mentioned are O'Brian, Butkis, Jones and Sergeant Stacker. Also O'Brian died and Jones was their sniper. Jones also carried a pistol later on and was hostage at the hands of the Elite. Butkis was the one who later grabbed the plasma pistol.
Trivia
The names of the ODSTs are the names of several of Bungie's animators.