five people in a tiny submersible last known whereabouts, 13,000 feet under the sea. some 33 hours of air left. also tonight, hunter biden s plea deal on we look at the effects. and the plot to assassinate a russian defector on american soil. good evening, we begin now with a desperate search for the oceangate titan. a miniature submarine with five people inside. they hoped to visit the right of the titanic on the ocean floor in the north atlantic but now they face a disaster of their own. they re slowly running out of air. that is, if they are still alive. we simply do not know. all communications have been lost. even if the craft is somehow able to surface on its own, it cannot be open from inside. rescuers would need to locate it before those on board run out of oxygen in some 33 hours. this is what five people aboard the missing oceangate titan are up against right now and what charges know all too well. joining us from st. john s, newfoundland, where the submerssible l