A gun rights argument is being built around an armed bystander who helped stop a mass shooting at an In-N-Out, framed as a win for people who carry guns.

• A gunman opened fire near an In-N-Out restaurant.
• A man named Jordan, out with his girlfriend, drew his own gun and shot back.
• His return fire pinned the shooter down and kept him from moving through the parking lot to hurt more people.
• Police arrived while the shooter was still pinned, and the gunman then killed himself.

Outlook: Expect this to fuel the ongoing gun control fight, with gun rights supporters holding it up as proof that armed civilians can stop attacks.