Investigators plan to push forward on Friday with efforts to retrieve the two aircraft involved in a crash in Washington that killed 67 people and raised questions about air safety in the U.S. capital.

Ari Schulman told NBC Washington that he saw the plane crash while he was driving on the George Washington Parkway, which runs alongside the airport. He said the plane's approach looked normal, until he saw it bank hard to the right, with "streams of sparks" running underneath, illuminating its belly.