Lieutenant W. K. Davidson was an officer in the UNSC and a member of the UNSC Engineering Corps in 2492. That year, he led archeological expidition four to lanet Onyx and surveyed the planet. He noted the rock structure of the planet as well as the fossil life found, and recommended a follow up survey. His report was ENGCORP Field Report A76344. That follow up discovered Forerunner artifacts. The planet was then taken over by ONI.