Wendy Pile didn’t recognize the man who looked like a “disheveled professor with long hair” who was hugging her children, Alyssa, 10; Chase, 8; and Amara, 3, at the Portland Airport. “When they knocked him down, I realized it was David,” she said. “I honestly didn’t recognize him at first because he has lost weight and his hair was so long.” “He looked like Einstein,” Alyssa added with a burst of giggles.