ATA performed services for the United States Department of Defense and US military during the 1991 Gulf War, transporting 108,000 military personnel on 494 missions for Operation Desert Storm and yet again during Iraqi Freedom and Enduring Freedom with the activation of the Civil Reserve Air Fleet ("CRAF"). During these periodic activations, ATA flight crews often and routinely spent as many as 19 hours aboard ATA aircraft in support of U.S. troops and the overall national defense missions. ATA's L-1011 aircraft were also chartered by the Department of Defense to fly personnel and their families between Philadelphia International Airport and Lajes Field, Naval Air Station Sigonella, Aviano Air Base and Incirlik Air Base (called "Freedom Flights" by personnel returning to the U.S. from these overseas installations).