18th AF command chief visits Travis Published Aug. 12, 2016 By Louis Briscese 60th Air Mobility Wing Public Affairs TRAVIS AIR FORCE BASE, Calif. -- U.S. Air Force Chief Master Sgt. Todd Petzel, 18th Air Force command chief, Scott Air Force Base, Ill., visited Airmen and toured several Travis Air Force Base, Calif., facilities during his short visit to the installation Aug. 11-12. Petzel visited Travis to provide remarks as the guest speaker for the Senior Non-Commissioned Officer Induction ceremony.