Leader Welcome Defense Secretary Jim Mattis and Deputy Defense Secretary Bob Work stand with Angolan Defense Minister Joao Lourenco during an honor cordon welcoming him to the Pentagon, May 17, 2017. DoD photo by Air Force Staff Sgt. Jette Carr SHARE: Download: Full Size (0.58 MB) Credit: Staff Sgt. Jette Carr VIRIN: 170517-D-GY869-011.JPG Photo Gallery