Slain police officer Wenjian Liu became a father Tuesday, more than two-and-a-half years after his death.
Liu's widow Sanny gave birth to a baby girl named Angelina.
The night of Liu's killing, Sanny requested that his sperm be preserved so that she might one day have his child.
Liu was killed in the line of duty in December 2014 along with his partner, Rafael Ramos.