# LAPD Investigates Officer Death During Private Dive Training Exercise Authorities examine safety protocol violations after an officer died during backyard pool training. - **Source:** [Los Angeles Times – California](https://www.latimes.com/california) - **Published:** 2026-11-11 - **Topic:** [politics](https://brifing.si/c/politics) - **Original article:** - **On Brifing:** https://brifing.si/s/d9fcade6-490a-4001-9f23-11a21ccae600 ## Fatal Training Incident LAPD officer Thomas Denton, 46, died following a drowning incident during a dive training exercise on November 5. The training occurred at a private backyard pool in Huntington Beach. Emergency responders were dispatched to the residence around 11 a.m., but the officer later passed away at a local hospital. ## Equipment and Risks Denton was reportedly testing a closed-circuit rebreather, a device that filters exhaled breath to remove carbon dioxide. Experts warn that these devices pose significant risks, including hypoxia or hyperoxia, if not operated correctly. Improper oxygen mixtures can trigger neurological responses, leading to sudden seizures while the diver is underwater. ## Investigation Scope The LAPD and the California Division of Occupational Safety and Health are currently investigating the accident. Officials are reviewing whether safety protocols were violated, specifically regarding the use of private residences for department training. Cal/OSHA has up to six months to determine if any workplace safety regulations were breached. ## Operational Protocols Department policy requires officers to obtain approval from their chain of command before training at non-department facilities. Officers must also maintain an approved injury prevention plan for such exercises. Investigators are currently examining whether these mandatory steps were followed by the personnel present at the Huntington Beach residence during the incident. ## Unit Background Denton served in the LAPD’s Underwater Dive Unit, established in 1957 to handle crime scenes and underwater evidence recovery. While rebreather technology is standard for the SWAT tactical dive team, it is less common for general unit tasks. The unit has recently assisted in high-profile federal investigations involving organized crime. ## Officer Legacy Governor Gavin Newsom ordered flags at the State Capitol to be flown at half-staff to honor Denton’s service. Colleagues described the 46-year-old as an outstanding officer known for his strong work ethic. He is survived by his wife and two children, leaving a significant impact on the department’s Metropolitan Division. ## Past Professional History Denton’s career included involvement in a 2008 fatal shooting during a narcotics case, where he and another officer killed a suspect lunging with a knife. Additionally, he was investigated in 2020 regarding allegations of misidentifying gang members, though prosecutors ultimately determined there was insufficient evidence to pursue formal criminal charges. ## Broader Institutional Context This incident occurs as the LAPD faces increasing scrutiny over rising payouts for workplace accidents and misconduct. The Orange County Sheriff’s Department is currently conducting an autopsy, with results expected in six to eight months. The department remains focused on supporting the grieving family while the comprehensive internal investigation continues. ## Sources covering this story - https://www.latimes.com/california/story/2026-11-11/lapd-investigation-dive-training-exercise-death-private-pool — --- _Summary written by Brifing from the original reporting. Copyright in the original article belongs to its publisher; read the full piece at the link above._