Lexey Swall/Staff Patricia Thompson holds her daughter, Annabelle Thompson, 10 months old, as she and her sister, Saundra Batrez, mourn the loss of their father, Sgt. Roy Williams, during the Collier County Sheriff's Office law enforcement memorial candlelight vigil Tuesday evening at East Naples United Methodist Church. Sgt. Williams died August 22, 1991, when his car left the road and struck a tree as he was returning from "investigating a suspicious aircraft" north of Everglades City. Tuesday's event was held to remember those who have lost their lives in the line of duty in honor of National Law Enforcement Memorial Week which runs May 13-19. Members from all Collier County law enforcement agencies, including the Florida Highway Patrol, attended the event.