It was expected to begin at 4 p.m. but has since then been rescheduled for 5:30 p.m. Once it begins, a streaming of the presser will be added to this story.

The National Transportation Safety Board says it has recovered two black boxes that will help provide investigators with answers as to what caused a deadly collision near Washington D.C.'s Reagan National Airport.

Black boxes recovered after a jet and Army helicopter collided near DC; 14 still missing as NTSB investigates the deadly crash. Follow Newsweek's live blog.

Just a day before a deadly midair collision at Reagan National Airport outside Washington, D.C., employees at the Federal Aviation Administration were sent an offer to resign with eight months’

An expert believes that because a civilian aircraft and military chopper were involved in the air tragedy, the investigation may be as comprehensive as any in history.

The 1982 crash happened moments after takeoff in icy conditions in roughly the same place as Wednesday's collision between a jet and Army helicopter.

The deadly crash in the Potomac after an American Eagle jet collided with a military helicopter has stirred memories of a long-ago tragedy in Washington, D.C. An Air Florida flight taking off en route to Fort Lauderdale crashed into a bridge and tumbled into the icy Potomac in January 1982.

The midair collision over the Potomac River on Wednesday brings back chilling memories of another tragedy in the same waters more than four decades ago—when Air Florida Flight 90, bound for Fort Lauderdale-Hollywood International Airport,

Around 4 p.m. Thursday at Reagan National Airport, all four TVs at the U Street Pub in Terminal 2 were streaming live coverage of the fatal plane crash that occurred just outside the windows the previous night.

National Transportation Safety Board Chair Jennifer Homendy said Thursday at a press conference that “we look at facts on our investigation and that will take some time.”

Instead of using the deaths of 67 people to speculate over whether hiring minorities makes us all less safe, Donald Trump ought to clam up and let investigators do their jobs.

The National Transportation Safety Board did not specify how many air traffic controllers were working at the time of the collision.