A dramatic plane crash in frigid temperatures. And a search and rescue that saved lives on the same partially frozen Potomac River. Almost 43 years ago to the day, tragedy struck when a commercial jet − Air Florida Flight 90 − plunged into icy waters shortly after an afternoon takeoff from the same airport where a passenger jet with 64 people aboard collided with an Army Black Hawk helicopter on Wednesday night.

Darkness has now fallen once again over the Potomac River making this already difficult recovery mission more challenging. Boats remain in the water at this hour and we're told about 50 members of the NTSB are out.

The U.S. skating community was in mourning on Thursday after learning several skaters were on an American Airlines regional passenger plane that crashed near Reagan Washington National Airport.