Almost everyone who landed on installation 04 died there. Johnson got on a pelican with LT haverson petty officer 2nd class Polaski and ODST corporal Locklear and found spartan-IIs Linda in a cryotube and John-117 with Cortana in the longsword and hijacked a covenant flag ship and went to Reach and picked up the remaining Spartans there and headed for Earth. Pete Stacker and Chips Dubbo some how got off it too