Three deputies were killed Friday in an explosion at the L.A. County Sheriff’s Department’s Biscailuz Center Training Academy in East L.A., the deadliest incident for the agency in more than 160 years.

Three Los Angeles County sheriff’s deputies assigned to the arson explosives detail were killed in an explosion at a law enforcement training facility.

A veteran investigator, a respected mentor and a skilled technician — the three arson investigators killed in an explosion at the Biscailuz Center in East LA were remembered as the “best of our