Two airlines cancel 787 flights . Crew gathering information on incident . Fire and rescue personnel used a fire retardant to contain the flames after the battery exploded . Boeing 's Dreamliner 787 makes an emergency landing after a battery fires signals . Landing occurs as U.S. investigators examine another battery involved in a fire .
Two airlines cancel 787 flights . Crew gathering information on incident . Boeing 's Dreamliner 787 makes an emergency landing after a battery fires signals . Landing occurs as U.S. investigators examine another battery involved in a fire .