All 64 people aboard an American Airlines jet that collided with an Army helicopter were feared dead in what was likely to be the worst U.S. aviation disaster in almost a quarter century, officials said Thursday.

A recovery operation and investigation is underway in Washington, D.C., after an American Airlines flight from Kansas and Black Hawk helicopter crashed midair and into the Potomac River. Authorities said all 64 aboard the flight are feared dead.

A regional jet carrying 64 people collided with an Army Black Hawk helicopter. Reagan National Airport grounded all flights.

President Trump on Thursday addressed the deadly midair collision just outside Washington, D.C., as rescue crews pulled victims from the Potomac River and investigators worked to determine the

President Donald Trump on Thursday claimed, without citing evidence, that diversity, equity and inclusion initiatives for air traffic controllers at the Federal Aviation Administration -- under Democratic presidents -- were partly to blame for the tragic plane and helicopter collision in Washington on Wednesday night.

An Army Black Hawk helicopter collided midair with an American Airlines flight from Wichita, Kansas, at Reagan National Airport on Wednesday.

A massive search operation is underway after a passenger aircraft carrying 64 people collided midair with a US Army Black Hawk helicopter near Reagan National Airport outside of Washington, DC, according to aviation and defense officials.

Trump said the Federal Aviation Administration, National Transportation and Safety Board and the U.S. military will carry out a "systematic and comprehensive investigation."

Leaders across the D.C., Maryland, and Virginia region, as well as federal lawmakers, are reacting to the tragic American Airlines plane crash near DCA.

Donald Trump appeared to place blame on DEI initiatives at the Federal Aviation Administration while speaking on the tragic plane crash in Washington, D.C.

The midair collision between an American Airlines flight and the military helicopter involved 67 people and is not expected to have any survivors.