Maui police marked nearly a year since Officer O was killed on duty by rallying support for a tougher gun law named after her.

• Officer O, 37, was shot and killed while responding to a call in Paia last year.
• Police lined a Maui highway holding signs to push the "Officer O Bill."
• The bill would make it a felony to carry a gun while high on drugs or while under a restraining order.
• Supporters say they want people to think twice before committing gun crimes in Hawaii.

Outlook: More sign-waving events are planned across Maui County, with backers vowing to get the bill passed in the next legislative session.