What we know about missing sub on expedition to Titanic wreck
What we know about missing sub on expedition to Titanic wreckhttps://wpnnradio.com/wp-content/themes/movedo/images/empty/thumbnail.jpg150150adminadminhttps://secure.gravatar.com/avatar/790df65a416873c3f0501d984b0b24a2f32bf2af0d1509085b901ade4bbb36e7?s=96&d=mm&r=g
A sub that set out to explore the Titanic wreckage vanished in the North Atlantic, prompting a massive search and rescue operation. source
