Secretary of Defense Jim Mattis visits U.S. Special Operations Command headquarters on MacDill Air Force Base in Tampa, Fla., Oct. 12, 2017. Mattis visited USSOCOM to discuss restoring military readiness, strengthening alliances and bringing reforms to the Department of Defense.

Photo by U.S. Air Force Master Sgt. Barry Loo

 

Watch James Mattis discuss the nature of war below: