Private Jimmy Sanchez was a sniper that helped Sgt. Nathan Hale and Cpl. Lee Dashiel find the only inhibitor which was crucial for the Sentinels' survival. Pvt. Sanchez first appears 30 miles west of Billings, Montana with the United States Army as they fight off the Chimera. The battle was turning in the Army's favor when Sanchez was approached by an officer who tells him to report to an installation in Keystone, South Dakota. Sanchez points out that Keystone is in Chimeran Territory to which the officer replies "not all of it".