SAN FRANCISCO (KGO) -- San Francisco paid tribute Sunday to three men who died when a co-worker entered a UPS building and opened fire last month.
The Glide Memorial Church ensemble performed a song to honor the lives of three ups workers, Wayne Chan, Mike Lefiti, and Benson Louie. Their family and friends knew them by other names.
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"Big Mike, Uncle Benson and 'Infectious' Wayne,'" San Francisco Mayor Ed Lee said.
The three were gunned down June 14th, by fellow ups driver Jimmy Lam, who had filed a grievance about working excessive overtime, Lam took his own life the same day.
PHOTOS: Multiple people killed in shooting at UPS facility in SF
Mayor Ed Lee offered the victim's families his condolences. "We will do everything to help you recover from the tragedy. But first, we honor them today," Lee said.
House Minority Leader Nancy Pelosi said gun violence must end. "A loss like this - so unexpected, gun violence leaves a trauma behind," Pelosi said.
RELATED: All 3 San Francisco UPS shooting victims identified
"Big Mike" Lefiti's cousin, Mack Toia says his family is just trying to cope with the loss of a man who was bigger than life.
"It's one day at a time. We just miss him, love him," Toia said.
The teamsters and ups family are standing as one.
"Not only will we stand with you today, but always be there," Ken Hall with the Teamsters International said.
San Francisco pays tribute to 3 men who died in UPS workplace shooting