John Dahlberg is a California attorney with an active practice assisting retailers and shopping centers with a host of security and law enforcement issues, among others. He is a former City of Oakland reserve police officer assigned to patrol and is a graduate of Yale University Law School. He is a partner at the San Francisco law firm of Dillingham Murphy LLP and can be reached 24 hours a day at 415.264.5401 because security issues happen 24 hours a day.