 Chalker transitioned back to SEAL Team SIX in 1987 which was renamed as Naval Special Warfare Development Group.His final duty station was as the Command Master Chief at the Naval Special Warfare Center for BUD/S (Basic Underwater Demolition/SEALs) Training in Coronado, California.While serving as Command Master Chief of BUD/S, Chalker was hired as a technical advisor for "The Rock", a 1996 Jerry Bruckheimer film.