On the way home with his family, Danny hits a man with his car who is fleeing from a gunman, and his family gets caught in the crossfire when Danny fires his weapon at the gunman. Frank deals with 9/11 guilt from impending loss of a friend whom he worked alongside at Ground Zero.
Elenco: Tom Selleck , Donnie Wahlberg , Bridget Moynahan , Will Estes , Len Cariou , Sami Gayle , Marisa Ramirez , Abigail Hawk , Vanessa Ray , Gregory Jbara , Robert Clohessy , Andrew Terraciano , Amy Carlson , Jennifer Esposito , Steve Schirripa .