Nathan Montgomery was an engineer on the fast track to a high-paying management position when he decided to devote his life full-time to helping those in need. He founded and directs Salt and Light, a charity that feeds an average of 225 families each week entirely through donations. While working tirelessly to improve the lives of others, Nathan, his wife and four children were also dealing with a crumbling house in desperate need of repair. Now the Montgomery family can continue their good work from a safe and comfortable new home from "Extreme Makeover: Home Edition," built with the help of United Rentals and hundreds of community volunteers.