Kate Snyder has been living in the same house in Severn, Maryland, for more than 18 years. I raised my son here. It was a beautiful place to raise a child. Now, I'm on my own and still enjoying it." But as the years pass, the house needs many repairs. Snyder, who is retired and still works two part-time jobs, does not have the money to pay for repairs. Enter Group Cares, a Christian-based aid organization. Each year, the group sends hundreds of teenagers on service trips across the United States. The young people repair homes and provide other help. One such team of teens is spending a week repairing Snyder's house. "They're going to put in new stairs for me," she said happily. And it needed paint desperately. Blocks away, other teens are working on Ursula Brett's home. They are removing wallpaper and preparing to paint the house. More than 400 teenagers from all over the U.S. take part in the service trips.