Easley
From Halopedia, the Halo wiki
Summary
Major Easley was a UNSC Marine officer and pilot of Longswords. He was stationed at Earth in 2552.
In the E3 Demo, during The First Battle of Earth, Sergeant Banks radioed him in to help the Master Chief to destroy the Covenant heavy artillery. He piloted his Longsword interceptor into the area, and destroyed the artillery piece.