said by dnoyeB:
Government agencies don't use the public networks for their business. They have savvy and complex antenna networks throughout each state. Their digital radios are very nice for vocal communication. Encrypted too.
Knocking out the public DATA network briefly is not that big of a deal. Well maybe for kids who forget their phones can be used for speech...
except it will soon be more then just DATA. VoLTE is coming and Verizon wants to sunset 3g /2g and CDMA by 2021 if not sooner. AT&T also will be phasing out 3g - 2g and will want to go VoLTE along with all the carriers . LTE seems to be the big thing going forward.