legacy and spirit. i'll never fret you. >> and my uncle gary, i love you and wish you were here. my siblings and i will be a beacon of your memory for many years to come. >> and my aunt, not a day goes by without you being missed and loved. i've never gotten to meet you, but i'm sure we would have gotten along so well with you as my aunt. you have gone too soon, but the memory of you will forever be in our hearts. >> and my uncle, lukasz, who i never met but i miss very dearly. my mom always talked about how much of an amazing brother you were. we were so sad you had to go so soon and so young, but i'll love you forever, and you'll never be forgotten. >> each family lost someone precious to them. firefighters and police lost also legions of beloved colleagues. seeing the victims' names etched in stone is a heartbreaking experience. and for those who survived, really, life has never been the same again as jim acosta meets