Complex sentence: Passengers on the plane heard through phone calls the fates of the other hijacked planes, and organized a brief assault to retake the cockpit-it is believed the hijackers crashed the plane into the Pennsylvania farmland rather than cede control of the plane.
Split into simpler sentences: Passengers on the plane heard through phone calls the fates of the other hijacked planes, and organized a brief assault to retake the cockpit. It is believed the hijackers crashed the plane into the Pennsylvania farmland rather than cede control of the plane.