For most people, home is a place with four walls. It's a place to eat, sleep, rest, and live. For a refugee, the concept of home is ever-changing, ever-moving, ever-wavering. And often, it doesn't have any walls at all. Eleven-year-old Lam escapes from Vietnam with Dee Dee during the Vietnamese Boat People Exodus in 1979, when people from Vietnam, Laos, and Cambodia fled their homelands for safety. For a refugee, the trip is a long and perilous one,...