'New York City - five proud boroughs sitting where the Hudson River meets the Atlantic Ocean. At the city's heart - Manhattan - densely populated and among the world's major cultural, commercial and financial centres. With over eight million people living in New York City, one in every 38 people in the United States call this city home. On September 11 2001, New York changed forever - Not just the skyline, but the mindset of a nation - It is one of those pivotal moments that has shaped America. For many, it was the moment when neighbours became brothers, stopping what they were doing to contribute time, money, and other resources to those directly impacted by the attacks. Where were you, the day the world changed? Everyone has their own story to tell - When everyone, everywhere stopped and nothing would ever be the same again. 20 years later and the horror from that day still remains almost unimaginable. '