The flight data recorder and cockpit voice recorder, known as the black boxes, may offer clues about what went wrong before the crash.

After an all-night search-and-rescue operation in frigid conditions and heavy winds on the icy Potomac, officials pivoted Thursday morning to recovery operations.

An American Airlines regional passenger jet and a U.S. Army Black Hawk helicopter crashed into the frigid Potomac River after a midair collision near Reagan Washington National Airport on Wednesday night,