Astronomers using NASA's Chandra X-ray space telescope have witnessed a massive black hole jet slam into an unknown object in space. Astronomers have seen black hole jets blasting cosmic objects ...

Salvage crews pull up a part of a Black Hawk helicopter near the site in the Potomac River of a mid-air collision between an American Airlines jet and a Black Hawk helicopter at Ronald Reagan ...

The Army has made changes to how its helicopters use a safety system that broadcasts aircraft location and has reduced the ...

I thought there was progress in that area, but evidently there isn’t,” said Col. James H. Harvey III, who blamed Trump for ...

Shortly before the collision, a controller got an alert saying the plane and Black Hawk were converging and asked the helicopter if it had the jet in sight. The military pilot said yes and asked for ...