192K views · 1.7K reactions | "If at any point in my life what I did mattered, it was now." Created in collaboration with National September 11 Memorial & Museum , the four-night limited series #911OneDayInAmerica continues TONIGHT at 9/8c. Catch up now on Hulu | National Geographic TV | Facebook

When a plane hits the north tower of the World Trade Center, the first firefighters on the scene race against time to rescue the civilians trapped inside. Now, after almost two decades to reflect on the events that they lived through, we hear from eyewitnesses and first responders about what exactly happened on that fateful day in America. 9/11: One Day in America, premieres Tuesday 31st August at 9pm on National Geographic UK. | National Geographic UK

9/11: One Day In America

From the paramedics to the firefighters, the stories of first responders in #911OneDayinAmerica are harrowing, emotional, and heroic. From National Geographic in collaboration with National September 11 Memorial & Museum, the four-night limited series premieres on National Geographic TV Sunday, August 29 at 9/8c and next day on Hulu. | ABC13 Houston

Starting 31st August at 9pm, 9/11: One Day in America marks 20 years since the tragic events of September 11th 2001. This groundbreaking documentary series tells the definitive story of the day through the experiences of those who were there. | National Geographic UK