Three dead in Oklahoma Walmart shooting, including gunman

Three people were killed in a shooting early Monday outside a Walmart store in Oklahoma, including the assailant, police said -- the latest in a string of deadly gun attacks at the popular supermarket chain.Danny Ford, the police chief in the town of Duncan, said the shooting -- an apparent domestic dispute -- took place shortly before 10:00 am (1600 GMT) in a parking lot in front of the store.Family members at the scene said the shooting was a domestic dispute between a husband and his wife, a