One hundred and five years ago, the Titanic struck an iceberg in the Atlantic on its maiden voyage.
Hours later, the so-called "unsinkable" ship descended to the bottom of the ocean and more than 1,500 people died.
It took scientists more than 70 years to find the wreckage, and now explorers are preparing to return for the first time in more than a decade and before the wreck disappears forever.
Fewer than 200 people have crossed over its bow or glided past its promenade decks. Rush plans to raise that number.
"More people have been to space than have been to see the Titanic," said Stockton Rush, founder of private submersible company OceanGate.
Watch the video for the full CBS report.