Sergeant Granite

Sergeant Granite is in charge of the Enclave Control Company

Background
Granite commands the Enclave Control Company, a specialized unit usually assigned to perimeter defense. He and his squad are deployed to the oil rig, and try to keep the Chosen One from escaping.

Appearances
Granite appears

Behind the scenes
According to the Fallout Bible, Granite and his squad escaped on board the tanker, and headed for Navarro upon reaching the mainland.