Large hole tears into plane, 118 on board

PlaneFederal officials said it was a "fuselage rupture" -- a large hole on the top of the Boeing 737 -- that led to a drop in cabin pressure and a terrifying descent from 36,000 feet to an emergency landing at a military base in the Arizona desert. No serious injuries were reported among the 118 aboard, according to Southwest Airlines, and the FBI said it was a "mechanical failure," not an act of terror or other foul play. The cause of the hole was not immediately known.