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.

Washington’s regional airport was closed after the crash that apparently took the lives of 67 people. The DC airport is reopening at 11 a.m.

Sixty-seven people are presumed dead after a passenger plane on approach to Reagan National Airport near Washington, DC, collided Wednesday night with a US Army helicopter midair, sending both aircraft into the Potomac River below,

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.

The skies around Washington are often crowded with commercial flights, military planes, helicopters and other aircraft.