Live updates: American Airlines plane collides with helicopter in D.C., crashes into Potomac River
An American Airlines plane and a U.S. Army helicopter collided near Reagan National Airport and crashed into the Potomac ...
First independently developed jet breaks the sound barrier over the California desert
The XB-1 aircraft accelerated to Mach 1.05 within about 11 minutes of taking off, according to Boom Supersonic and live video ...