No Warning Before Plane Crash

Investigators with the National Transportation Safety Board are still looking for the cause of a plane crash near Buffalo City, Arkansas, that killed two people.  Authorities say there was no distress call and no flight plan filed.  But family members say the plane, licensed to a company in California, was in route to Georgetown, Texas from an airport in Danville, Illinois.  Robert Ross from Santa Rosa, California and his son, Michael Ross, from Austin, Texas were licensed pilots.