Paying Tribute President Donald J. Trump, First Lady Melania Trump, Defense Secretary Dr. Mark T. Esper and Marine Corps Gen. Joe Dunford, chairman of the Joint Chiefs of Staff, pay tribute to the victims of the 9/11 attacks during a ceremony at the Pentagon, Sept. 11, 2019. SHARE: Download: Full Size (2.6 MB) Tags: 9/11, 9/11 Observance Credit: Lisa Ferdinando, DOD VIRIN: 190911-D-BN624-0375Y.JPG Photo Gallery