Defense Leaders Defense Secretary Jim Mattis meets with Gen. Udomdej Sitabutr, Thailand's deputy defense minister, during the 16th Shangri-La Dialogue Asia security summit in Singapore, June 3, 2017. DoD photo by Air Force Staff Sgt. Jette Carr SHARE IMAGE: Download Image: Full Size (1.15 MB) Photo By: Air Force Staff Sgt. Jette Carr VIRIN: 170603-D-GY869-873.JPG Photo Gallery