Friends, family and coworkers gathered to honor Dennis Johnson, a long-time Milwaukee County public safety officer who was shot and killed Friday afternoon while sitting in his car. About 100 people attended the vigil in the Nor th Division neighborhood, mourning a man they described as kind-hearted, hardworking and deeply committed to the people around him. "I can't believe somebody would do this to my brother," Lisa Beatty said. "We will not rest until they're caught for killing my brother for no reason."Johnson was 56 years old and worked as a public safety officer at the Milwaukee County Courthouse. He was off duty at the time of the shooting. Beatty said her brother was not someone anyone would expect to become a victim of gun violence."I can't believe that this happened to my brother," she said. "He was not in the streets. You don't expect something like this to happen to someone like him." Beatty shared that the outpouring of support at the vigil meant everything to her family."I'm just happy people are here for my brother and for our family as well," she said. "Because we're going to need it these next few days."Community members at the vigil said they are tired of gathering to mourn lives lost to gun violence. Monte Mabra, founder of I Will Not Die to Gun Violence: The LaTroy Harris Initiative, spoke about the senselessness of Johnson's death. "We've got somebody who was loved, look at these people, we don't even know why he's absent right now," he said. "Because some idiot with a gun decided to take his life?"Johnson's coworkers said they cannot imagine returning to their profession without him."He did nobody harm!" Cassandra Renteria said. "He minded his business! He made everybody laugh. He will be missed." "It's unbelievable because he was such a wonderful man," Chasity Jackson said. "He will be missed."For Johnson's family, his absence will be felt most in the quiet, everyday moments."Him showing up to Sunday dinner," Beatty said. "The grill, the desserts, he was always the first to the table and last to the table."As of Saturday night, the Milwaukee Police Department did not have a suspect in custody but said they are investigating Johnson's death. This story was reported on-air by a journalist and has been converted to this platform with the assistance of AI. Our editorial team verifies all reporting on all platforms for fairness and accuracy.Its about time to watch on your time. Stream local news and weather 24/7 by searching for TMJ4 on your device.Available for download on Roku, Apple TV, Amazon Fire TV, and more.Report a typo or error // Submit a news tip ...read more read less