Preview: Costa Concordia
December 14, 2012 10:24 AM
When the 951-ft.-long luxury liner hit a rock 11 months ago off the Italian coast, it was the biggest passenger ship ever to capsize. Now, the salvage operation to float and tow away the huge vessel is the biggest maritime salvage operation ever undertaken. Lesley Stahl reports on Sunday, Dec. 16 at 7:30 p.m. ET and 7:00 p.m. PT.