09/08/2011 08:21 am ET Updated Nov 08, 2011

"John and Joe"

John Vigiano Sr. is a retired New York City firefighter whose two sons followed him into service--John Jr. was a firefighter, too, and Joe was a police detective. On September 11, 2001, both Vigiano brothers responded to the call from the World Trade Center, and both were killed while saving others. Here, John Sr. remembers his sons and reflects on coping with his tremendous loss.

StoryCorps' September 11 shorts, animated by the Rauch Brothers, feature stories collected through its September 11th Initiative. These works were created with the assistance and blessing of the families of the victims memorialized.

For the past five years, StoryCorps has worked to record one story to honor each life lost on September 11, 2011. To date, survivors, families, friends, and rescue workers have memorialized nearly 600 individual victims of the attacks through the StoryCorps interview process.