Tustin Police Officer Glenn Hollingshead is the fourth of his name. But at the Tustin Police Department, he’s the second. That’s because Hollingshead, who became a sworn officer in 2018, entered the agency not long after his father, Glenn Hollingshead III, left. The elder Hollingshead retired from Tustin in 2017 after serving 27 years. But he stayed in law enforcement as an Orange County Sheriff’s Deputy at the Theo Lacy jail, where he still works. At the Tustin Police Department, he primarily served as a patrol officer, earning several lifesaving awards before retiring as a community impact officer. Unfortunately, the…