Authorities are seeking public assistance for the shooting death of a Miami-Dade Water and Sewer employee, 33-year-old Sean Webster, who was involved in the altercation outside a townhome on Northwest 84th Street, off Fourth Avenue. The suspect is believed to have pulled the trigger during a confrontation. Webster was taken to Jackson Memorial Hospital's Ryder Trauma Center in critical condition. On Wednesday, authorities positively identified Nathan J.