Law enforcement officials in bomb squad protective gear are driven to a bunker as a standoff with the shooter continues in Midland City, Alabama January 30, 2013. A standoff continued on Wednesday with a gunman who boarded an Alabama school bus and fatally shot the driver before fleeing with a young child and holing up in an underground bunker, authorities said. REUTERS/Phil Sears (UNITED STATES - Tags: CRIME LAW)