In Marin, thousands of guns are stored unlocked and loaded, accessible to anyone in the home, according to a civil grand jury report published on Oct. 30. The Marin County District Attorney and Sheriff’s Office should do more to encourage firearm safety by launching public awareness campaigns, offering free gun locks and allowing residents to turn in unwanted weapons, the 19-member watchdog group recommended. 

The need for firearm safety is paramount: Although it is impossible…