Because this is the deadliest part of Bushby's journey, his mother flies to Alaska with his son, then 15, for a reunion and farewell. To accomplish the feat, Bushby must swim from ice floe to ice floe, letting the winds and currents take him where he hopes to go. "Some of these chunks of ice are the size of houses," Bushby explains. "I was swimming across leads in an immersion suit, then climbing a 10-foot wall." Fourteen days later, after drifting over 125 miles, he is deposited near the Russian village Uelen. He calls his father on a satellite phone, shouting, "Terra firma!"