President Trump marked the 16th anniversary of 9/11 at the Pentagon on Monday, vowing that "America cannot be intimidated. And those who try will soon join the long list of vanquished enemies who dared to test our mettle."
Earlier in the morning, Trump and first lady Melania Trump observed a moment of silence at the White House, marking the moment when the first plane hit the North Tower of the World Trade Center in New York on Sept. 11, 2001. Vice President Mike Pence observed the anniversary separately, in Shanksville, Pennsylvania, where United Airlines Flight 93 crashed, NBC News reports.
In his remarks, Trump also recalled the "horror and anguish of that dark day" and paid homage to the victims of the attacks. "We mourn them, we honor them, and we pledge never, ever to forget them," he said, adding that "when America is united, no force can break us apart." Watch below. Jeva Lange