Troop Greeting Defense Secretary Jim Mattis meets with troops stationed at Al Udeid Air Base, Qatar, April 21, 2017. Mattis is visiting the Middle East and Africa to reaffirm key U.S. military alliances, engage with strategic partners and discuss cooperative efforts to counter destabilizing activities and defeat extremist organizations. DoD photo by Air Force Tech. Sgt. Brigitte N. Brantley SHARE: Download: Full Size (1.86 MB) Credit: Brigitte N. Brantley VIRIN: 170421-D-GO396-0899C.JPG Photo Gallery