What we know about investigation into midair D.C. plane crash
As search crews continue recovery efforts in the Potomac River, investigators are trying to piece together what caused Wednesday's midair collision between an American Airlines plane and an Army helicopter above Washington, D.C. CBS News senior transportation correspondent Kris Van Cleave has more.
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As search crews continue recovery efforts in the Potomac River, investigators are trying to piece together what caused Wednesday's midair collision between an American Airlines plane and an Army helicopter above Washington, D.C. CBS News senior transportation correspondent Kris Van Cleave has more.
