Left to right: Then-Navy Rear Adm. Craig S. Faller, left, senior military assistant to Defense Secretary James N. Mattis; Sally Donnelly, the secretary's senior advisor;, and the secretary travel via CH-47 Chinook helicopter to the Resolute Support mission headquarters in Kabul, Afghanistan, April 24, 2017. Now a vice admiral, Faller testified before the Senate Armed Forces Committee on his nomination to receive his fourth star and become commander of U.S. Southern Command Sept. 25, 2018. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley