In the case of large events they can easily overload cell networks as well. That happened in the Boston Marathon bombing[1]. Thankfully there was already hams r

In the case of large events they can easily overload cell networks as well. That happened in the Boston Marathon bombing[1]. Thankfully there was already hams running communication for the event and could get messages through when the towers were down. [1] http://www.arrl.org/news/radio-amateurs-provide-communication-support-in-boston-marathon-bombings-updated http://www.arrl.org/news/radio-amateurs-provide-communicatio...