June 20, 2023 7:45 am Sub disappears taking tourists to look at Titanic wreckage A rescue mission is underway after a submersible used to take tourists to see the underwater wreckage of the Titanic went missing on Monday. US & World Videos 2:07 Chicken and beef parts spill on I-880 in Oakland 2:06 Chicken, beef parts spill on I-880 in Oakland 2:25 Richard Allen Davis' resentencing bid for Polly Klaas murder conviction rejected 0:57 Michelle Obama's mother, Marian Robinson, dies at 86 16:31 Johnny Wactor's co-worker Anita Joy recalls trying to save him after shooting