Michael Lefiti was identified by family members early Wednesday afternoon. He was 46-years-old and a father of five.
Wayne Chan, 56, of San Francisco and Benson Louie, 50, also of San Francisco died during the shooting.
The shooter, 38-year-old Jimmy Lam, allegedly turned the gun on himself.
Lefiti was a father who had just celebrated his wedding anniversary Tuesday.
"I want him back. I want him back," said his cousin Mack Toia while crying.
Toia watched as first responders attempted to resuscitate him. He was at UPS to pick up his cousin from work. He told him he loved him.
"I got to touch him but I couldn't hug him. They just pushed me away," said Toia.
Lefiti's co-workers are grieving.
"My prayers and condolences go out to the families that lost their fathers for just going to work and just trying to do their jobs trying to support
their families and now they don't get to do that just because one guy couldn't handle it," said co-worker and friend Nilo Mauricio.
Many people stopped by a vigil at the Diamond Heights Safeway which was on Lefiti's route. They signed a poster board with his picture that said
rest in peace gentle giant. One person wrote, "You will always hold a place in my heart."
"He was the nicest guy any of us knew," said friend Rene Beck.
Lefiti worked for UPS for 17 years.
"You always think you're going to see someone tomorrow and you just never know when their time is going to come," said neighbor Jamal Cornelius.
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