sentences:  After the September 11th, 2001 terrorist attacks on the United States, elements of every Air National Guard unit of the DC ANG were activated in support of the Global War on Terrorism.Flight crews, aircraft maintenance personnel, communications technicians, air controllers and air security personnel were engaged in Operation Noble Eagle (ONE) air defense overflights of major United States cities.On 11 September 2001, the wing was given authorization for its pilots to shoot down threatening aircraft over Washington DC.