Remembering the Father I Never Met: A 9/11 Memorial

10 years after the tragedy of 9/11, children remember the fathers they lost

Jamie Gartenberg Pila, 9

Jamie's mother, Jill, believes her younger daughter's friendly and open personality reflects that of her father, commercial real estate broker James Gartenberg. His death in Tower 1 at the age of 35 is still difficult for Jamie to process, but she has realized that her loss goes beyond her and her 12-year-old sister Nicole. "She knows she's a part of history, and she's OK with that," Jill told PEOPLE.