From Halopedia, the Halo wiki
UNSC Marine Corps
Participated in the Battle of Mombasa
Corporal Kale West was a sniper in the UNSC Marine Corps during the Battle of Mombasa. He was well known due to his incredible aim and accuracy with the sniper rifle. His rifle of choice was the SRS99D-S2 AM Sniper Rifle.
During the battle, he was photographed by the famous war photographer Jake Courage.