The crash happened Wednesday night over the Potomac River, killing all 64 passengers on the commercial flight and three crew members on the military helicopter.

The test flight took place in the same Mojave Desert area in California where Charles "Chuck" Yeager first broke the sound barrier in 1947.

The U.S. Army described the helicopter as a UH-60 Blackhawk based at Fort Belvoir in Virginia. The helicopter was on a training flight. Military aircraft frequently conduct training flights in and ...

Wednesday's crash involving an American Airlines flight and Black Hawk helicopter marked the first commercial crash on U.S. soil in more than 15 years.