A sonic boom was heard across the Washington DC area Sunday afternoon when military jets raced after a private, unresponsive plane that crossed into restricted airspace and later crashed, killing all four people onboard.
The deafening boom rang out when two F-16 fighter jets were scrambled from Joint Base Andrews, in Maryland to investigate the aircraft that was flying, but not responding to radio transmissions shortly after 3 p.m., according to the Department of Defense.
Pilot was observed passed out.
