Secretary of Defense Dr. Mark T. Esper and his wife, Leah, receive a tour of a B-2 Spirit stealth bomber at Whiteman Air Force Base, Mo., July 22, 2020. Esper spoke with base leaders and Airmen to receive an in-depth understanding about the combat readiness of the Air Force's only B-2 base, including development and employment of the B-2's combat capability as part of Air Force Global Strike Command. (U.S. Air Force photo by Senior Airman Thomas Barley)