Why don't we give the president the authority to shutdown our cellular networks?

The Federal Register informs today that the National Security Telecommunications Advisory Committee (NSTAC), set up by a Reagan Executive Order 12382, has a meeting scheduled for January 31st. The first 45 minutes of the hour-long meeting will be open to the public via teleconference, but the last 15 minutes will be closed. During the closed portion of the meeting they are to discuss and vote on the NSTAC Cellular Shutdown paper [which I am unable to find a copy of...if you can find one, please forward one to me] which outlines the process to follow after an order has been issued for shutting down cellular service.

WHAT?!

I can understand the need to isolate a particular cell phone that is being used as a means to detonate a bomb remotely, but to shut down networks or portions thereof is just too much control. I know Israel has done this for years after a bombing, but what has it achieved?