2,977 people were killed on September 11, 2001.
It's been 15 years.
Loved ones say the calendar may change, but the pain remains the same.
Judi Reiss' son, Josh, worked in the north tower.
He was just 23-years-old when he was killed.
Josh went to Pennsbury High School along with his four other siblings, and then to North Carolina for college.
He then moved to New York City to begin his career.
Judi says that Josh was working at another firm when he was cherry-picked by the company because he was just that good at his job.
Josh was one of the youngest international bonds traders working in the top floors of the tower with Cantor Fitzgerald.
But on September 11, that all changed.
Judy spoke to Mike Jerrick on Good Day Philadelphia this morning, recalling that fateful day and paying tribute to the memory of her beloved son. Listen to her powerful words in the video above.