Stock Photo - U.S. President Donald Trump walks toward Oval Office of the White House after leading a moment of silence in remembrance of those lost during the September 11, 2001 terrorist attacks, in Washington, D.C., U.S., on Monday, Sept. 11, 2017. Trump is presiding over his first 9/11 commemoration on the 16th anniversary of the terrorist attacks that killed nearly 3,000 people when hijackers flew commercial airplanes into New Yorkís World Trade Center, the Pentagon and a field near Shanksville, Pennsylvania. Photographer: Andrew Harrer/BloombergUnited States President Donald J. Trump walks toward Oval Office of the White House after leading a moment of silence in remembrance of those lost during the September 11, 2001 terrorist attacks, in Washington, D.C., U.S., on Monday, September 11, 2017. Trump is presiding over his first 9/11 commemoration on the 16th anniversary of the terrorist attacks that killed nearly 3,000 people when hijackers flew commercial airplanes into New York's World Trade Center, the Pentagon and a field near Shanksville, Pennsylvania. Credit: Andrew Harrer / Pool via CNP · NO WIRE SERVICE · Photo: Andrew Harrer/Consolidated News Photos/Andrew Harrer - Pool via CNP. - Washington/District of Columbia/US