Defense Secretary Austin will bid farewell Friday following a term that included three major military crises, a global pandemic and a brush with cancer.
If confirmed, Troy Meink would inherit key decisions about the Air Force's fighter force and how to right-size the Space Force as it takes on new missions.
It's the latest development in the U.S. military's struggle to bring to justice the man charged with planning the Sept. 11 attacks on the United States.