That left an air traffic controller handling dual roles, according to the person briefed, who was not authorized to speak publicly about the investigation into the crash. Typically, the tasks of handling helicopter traffic and managing the planes are divided from 10 a.

At least 28 bodies were pulled from the icy waters of the Potomac River after an American Airlines jet carrying 60 passengers and four crew members collided with an Army helicopter while landing at Ronald Reagan National Airport near Washington,