A passenger jet collided midair with a military helicopter near Reagan Airport, sending the aircraft into the icy Potomac ...

“You are not expecting a piece of traffic or helicopter or plane so close to you and so ... ADSBexchange was able to triangulate the flight path of the helicopter using multilateration (MLAT).

At least 64 people were on board the American Airlines flight that collided with a military helicopter over the Potomac River ...

Newly unsealed documents give one of the most detailed views yet of the evidence gathered on the accused 9/11 mastermind ...

LOUISVILLE, Ky. — The passenger aircraft that collided with a helicopter near Washington Wednesday night flew over the ...

Newly Unsealed Documents Reveal More Details of Prosecutors' Evidence in 9/11 Attacks WASHINGTON (AP ... of holding a trial in a courtroom a plane flight away from the U.S. Associated Press ...