 By September 1952, the B-36s assigned to the 11th Wing and its companion at Carswell, the 7th Bombardment Wing, comprised two-thirds of SAC's intercontinental bomber force.On 1 September 1952, what was then thought to be a tornado rolled across the Carswell flight line, with winds over 90 miles per hour recorded at the control tower.By the time it had passed "the flight line was a tangle of airplanes, equipment and pieces of buildings."