By David Shepardson and Jeff Mason WASHINGTON (Reuters) -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.

U.S. authorities said on Thursday it was not yet clear why a regional jet crashed into a U.S. Army helicopter at a Washington airport, killing 67 people in the deadliest U.S. air disaster in more than 20 years.

Virginia lawmakers continued at the State Capitol on Thursday as they expressed their sadness over the deadly collision between an Army helicopter and an American Airlines flight near Washington, D.C.

Jayden Daniels fell just short of making the Super Bowl in his rookie season, but the Washington Commanders’ star quarterback is sending a Virginia Marine to the big game.

Sixty-seven passengers and crew died in Wednesday night's crash between a regional American Airlines jet and a Blackhawk helicopter from Fort Belvoir near Reagan National Airport.

Legislation to officially remove “Washington Redskins” from the Virginia Code and replace it with “Washington Commanders” took a step forward Tuesday, advancing to the full House Transportation Committee.

Investigators recovered the cockpit voice recorder and the flight data recorder from the plane involved in Wednesday night’s mid-air collision with a US military helicopter that killed all 67 people onboard both aircraft.

Officials this morning say there are no survivors after a plane crash in Washington. The plane involved has ties to Ohio. What we know.

Learn more about the path of American Airlines Flight 5342 and the Black Hawk helicopter that collided before 9 p.m. on Wednesday.

"I walk here every day. I see helicopters going around. I see planes coming in like crazy. I never thought that would happen."

The National Transportation Safety Board says it has recovered two so-called “black boxes” from the American Airlines regional jet, following the deadly collision with an Army Black Hawk helicopter on Wednesday evening.