i m alex marquardt in the situation room. out front next. 34 hours, that s how much oxygen is left for the five people missing on a submersible heading to the titanic. plus, hunter biden s plea deal. president biden s son agreeing to plead guilty to federal criminal charges, most likely avoiding jail time. republicans are calling it a sweetheart deal. is it? and turning russians from putin s war into a prison cell. the new campaign from behind bars for alexei navalny. his daughter dasha is my guest. good evening. i m erin burnett. the clock is ticking as rescuers race to save five people on board that submersible off the coast of newfoundland called the titan. it has about 34 hours of breathable air left, according to the coast guard. the vessel was headed 13,000 feet beneath the ocean s surface heading to the titanic. it s been missing since yesterday morning. rescue teams are gathering at the scene. the search area for the su submersible is now larger than the