A small plane crashed in a densely populated San Diego suburb Monday, killing at least two people, including a UPS driver, and leaving a trail of destruction that sent neighbors scrambling to help neighbors. At least two others were injured. Witnesses described a retired couple being rescued from one of two homes that were destroyed in Santee, a largely residential suburb of 50,000 people. Ten other homes were damaged. Several vehicles, including a delivery truck, were also torched.