Idaho police released new surveillance footage showing the chaotic scene when a gunman opened fire at an In-N-Out Burger in Twin Falls. Idaho police released new surveillance footage showing the chaotic scene when a gunman opened fire at an In-N-Out Burger in Twin Falls. Idaho police released new surveillance footage showing the chaotic scene when a gunman opened fire at an In-N-Out Burger in Twin Falls. Idaho police released new surveillance footage showing the chaotic scene when a gunman opened fire at an In-N-Out Burger in Twin Falls. Police said Friday there's no known motive in the deadly mass shooting at an In-N-Out Burger in Twin Falls, Idaho, as they released chilling video footage from the chaotic shooting scene.