As an airline ticket agent, Michael Tuohey helped two of the hijackers check into their flights — the starting point of a journey that ended in American Airlines Flight 11 crashing into the World Trade Center. He still struggles with the memory ▻ ↧ Twenty-five years after 9/11, Americans still live with its legacy Scott Larsen was 4 years old when his dad, the New York City firefighter he was named after, was killed in the collapse of the World Trade Center on September 11, 2001.