Former NTSB chair assesses Washington, D.C., plane crash

The National Transportation Safety Board has launched an investigation into Wednesday night's midair collision between an American Airlines flight and a military helicopter. Former NTSB Chair Robert Sumwalt, CBS News transportation safety expert and analyst, joins "America Decides" to discuss.

Former NTSB chair assesses Washington, D.C., plane crash
The National Transportation Safety Board has launched an investigation into Wednesday night's midair collision between an American Airlines flight and a military helicopter. Former NTSB Chair Robert Sumwalt, CBS News transportation safety expert and analyst, joins "America Decides" to discuss.