The honorable John Roth, assistant secretary of the Air Force for financial management and comptroller, tours the 726th Air Mobility Squadron passenger terminal at Spangdahlem Air Base, Germany, March 26, 2018. As the Air Force's comptroller and chief financial officer, Roth serves as the principal adviser to the Secretary and Chief of Staff of the Air Force on all financial matters. (U.S. Air Force photo by Airman 1st Class Jovante Johnson)