. >> he would take baboo to everest and babo would take him to the ocean.he camps. >> bumming food, supplies and cramped shelter off of other high priced expeck additions. he begins to size himself up against earth's highest peak. with paltry support, they begin a push into the death zone, above 26 thousand feet. >> sunlight coming. >> but the sunrise bounce along with the oxygen is now running dangerously low. >> i need to fly now. i cannot do anything if i cannot breathe. i said give me two breaths. >> with a blast of their last oxygen, he takes their lives into his hands. >> we're up! >> half way around the world, kimberly is singing, too. >> it was just this straight line going off the mountain and you're like that's it. they're in the air. opened it up and gave them the perfect conditions. >> in just 42 minutes, all the turmoil faded away. they climbed 15 miles to an airstrip in napal but their celebrations are brief. >> they weren't done with their expedition. >> still ahead, 500 miles of hiking and kayaking, a full month's trek, starting with some of