433rd Maintenance Group chief retires Published April 10, 2019 By Staff Sgt. Lauren M. Snyder 433rd Airlift Wing JOINT BASE SAN ANTONIO-LACKLAND, Texas -- U.S. Air Force Lt. Col. Stuart L. Martin, 433rd Maintenance Group commander, presents a retirement certificate to Chief Master Sgt. Anthony J. Rittwager, 433rd MXG maintenance operations superintendent, during a ceremony held at Joint Base San Antonio-Lackland, Texas, April 6, 2019. Rittwager retired after 38 years of military service. (U.S. Air Force photo by Staff Sgt. Lauren M. Snyder)