Secretary of the Air Force Barbara Barrett and Lt. Col. Nicola Polidor, the Det. 5, 29th Training Systems Squadron commander and B-2 Spirit stealth bomber pilot, are greeted by 509th Aircraft Maintenance Squadron crew chiefs prior to a familiarization flight for Barrett during a visit at Whiteman Air Force Base, Missouri, June 11, 2020. During her visit, Barrett spoke with base leaders, first responders and maintenance personnel across the installation to learn the B-2 Spirit stealth bomber’s critical role of global deterrence as part of the nuclear triad. (U.S. Air Force photo by Staff Sgt. Dylan Nuckolls)