Wreath Laying President Donald J. Trump participates in a wreath-laying ceremony at the 9/11 Observance Ceremony at the Pentagon, Sept. 11, 2017. During the Sept. 11, 2001, attacks, 184 people were killed at the Pentagon. DoD photo by Navy Petty Officer 1st Class Dominique A. Pineiro SHARE: Download: Full Size (1.17 MB) Credit: Petty Officer 1st Class Dominique A. Pineiro VIRIN: 170910-D-HG482-002.JPG Photo Gallery