Midair Collision Between U.S. Army Black Hawk and American Airlines Flight Over Washington: Investigation Underway – In a tragic and unprecedented aviation disaster, a U.S. Army Black Hawk helicopter and an American Airlines regional jet collided midair over Washington, D.C., late Wednesday night. Both aircraft plunged into the Potomac River, resulting in a devastating loss of life. Authorities are now racing to determine the sequence of events that led to the fatal crash, as concerns mount over air traffic safety and coordination between military and civilian aviation authorities….