Days later, Card traveled with Bush to the trade center site.
'His leadership, bravery and skill must never be forgotten. He carried the badge with him for the rest of his presidency. It's where hijackers crashed a commercial airliner on september 11, 2001, after the 40 passengers and crew members realized what was happening and tried to storm the cockpit.
The memorial is not the only event of remembrance planned for Tuesday.
It was his first visit as president to the Pennsylvania memorial site.
Ceremonies were held in both New York City and at the Pentagon in Washington, D.C.to honor and remember those killed in the attacks.
Almost two decades after the deadliest foreign attack on United States soil, which killed almost 3,000 people, the Trumps traveled to Shanksville, Pennsylvania, to remember the fallen.
The President began the day on a combative streak, tweeting angrily about the Russian Federation investigation from the White House as mourners were gathering in lower Manhattan, at the Pentagon and in the Pennsylvania field where Flight 93 crashed 17 years ago.
Calling it "the moment when America fought back", Trump said the fallen "took control of their destiny and changed the course of history". Vice-President Mike Pence represented the administration there on Tuesday.
They evacuated and went back into the building again and again to rescue survivors.
The terrorists "hoped to break our spirit, and they failed", he said. "Let's not trivialize them".
On the day of the attacks, he bragged about having the tallest building in Manhattan after the World Trade Center collapsed, a comment for which Trump still faces backlash. He was as soon as joined by his critical other, first lady Melania Trump, Pennsylvania Gov. Tom Wolf and feeble Gov. Mark Schweiker, who was as soon as the impart's lieutenant governor on 11th of September.
Speaking at the Pentagon, Vice President Pence echoed those thoughts, reminding Americans of another important reason to come together today.
Standing within the self-discipline the attach the last of the 11th of September planes crashed, President Donald Trump praised the "band of heroic patriots" who helped bring down the jetliner and saved the lives of endless others within the nation's capital.
But a bit of discord has bubbled up over Melania Trump's tweet about the somber anniversary. Around 10 a.m., Flight 93 passengers became aware of what was happening on other flights, took a vote and chose to try and storm the aircraft's cabin.
With 2,996 people killed and more than 6,000 injured, the attacks remain the deadliest ever on USA soil.
Thousands of visitors sat in near silence Tuesday morning in Somerset County, as a pair of bells rang out with dramatic chimes.
The names are read by victims' loved ones, some of them not yet born when the attacks happened.
Trump also remembered the emergency responders - police, firefighters and medical experts - who rushed to the Flight 93 crash site and to the twin towers and the Pentagon, running toward the burning wreckage in an attempt to render aid.
Smoke pours from the World Trade Center after being hit by two planes September 11, 2001 in New York City.
The memorial plaza is a massive display where the Twin Towers once stood.
On September 11, 2001, the plane - one of four commandeered by Al-Qaeda militants - crashed into a field in the small town of Shanksville, about 130 miles (200 kilometers) northwest of Washington. Organizers of the ground zero ceremony allow politicians to attend, but they've been barred since 2011 from reading names or delivering remarks.
Officially, 2,977 were killed, not including the 19 Islamic terrorists who carried out the attacks.