Two airlines cancel Two flights . Boeing gathering information on incident . NTSB 's Junko Ogura 787 makes an emergency landing after a battery alarm signals . Landing occurs as Japan investigators examine another battery involved in a fire .
Two airlines cancel 787 flights . NTSB gathering information on incident . Boeing 's Dreamliner 787 makes an emergency landing after a battery alarm signals . Landing occurs as U.S. investigators examine another battery involved in a fire .