A graduate journalism student at UC Berkeley used his cell phone to send out an SOS via Twitter moments prior to his arrest by Egyptian authorities. The student, James Karl Buck, had been photographing a demonstration as part of a journalism project. As his arrest was imminent Mr. Buck managed to send out a single word: ARRESTED. The message made its way to various cell phones and computers of friends in the U.S. and Egypt who rallied to his defense. His circle of friends contacted the university and the American Embassy who arranged for an attorney who helped spring him. Buck is now safely back in the U.S.