stay silent. >> heartbreaking unfolding in new york city where a young mother is suspected of stabbing her two sons to death. >> growing concerns over airport security after one man is arrested for allegedly holding a razor to a passenger's neck, just weeks after passengers were reportedly threatened with box cutters. >> nfl star odell beckham jr. removed from an american airlines flight. police say he appeared to be in and out of consciousness. >> the dramatic rescue at sea caught on video. a cruise ship passenger overboard in the gulf of mexico for nearly 24 hours. how the coast guard pulled off this daring rescue. the incredible new images just in. a plane crashing into power lines, cutting off power to tens of thousands. and irene cara inspired a generation. tonight we remember the icon who asked us to remember her name. >> announcer: from abc news world headquarters in new york, this is "world news tonight." >> good evening, everyone.