Cellular telephones are an excellent way to remain in touch and summon help, especially in the event of an emergency. An advantage of having a cell phone is the reliability and security it brings in knowing that you have one. In critical points in time, people with cell phones can more easily and faster reach help than those without cellular phones can. For example, victims of the World Trade Center collapse used cellular phones to call rescuers to tell them their locations. In at least one case, a cell phone allowed

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