Is 'At the same time or shortly thereafter, Atta-the only terrorist on board trained to fly a jet-would have moved to the cockpit from his business-class seat, possibly accompanied by Omari.' an autonomous statement, not logically connected to 'Atta and Omari were two terrorists who were armed with box cutters.'
At the same time or shortly thereafter, Atta-the only terrorist on board trained to fly a jet-would have moved to the cockpit from his business-class seat, possibly accompanied by Omari.###Atta and Omari were two terrorists who were armed with box cutters.