At this point there is no indication or basis to believe that this was a threat to the United States." Marquin Mullin (of the Department of Homeland Security) states that the grounding of the flights imposed by the Federal Aviation Administration (FAA) was caused by a "malfunction in the communication systems".

At this point there is no indication or basis to believe that this was a threat to the United States." Marquin Mullin (of the Department of Homeland Security) states that the grounding of the flights imposed by the Federal Aviation Administration (FAA) was caused by a "malfunction in the communication systems".