[OldEagle]

"That was my first thought. At 15 seconds per phone call, it would take over 4 hours to call them all. "

But using the alarm feature all could go off at once.

[robertpaulsen]

"But using the alarm feature all could go off at once."

True, but then why go to the trouble of using cell phones? A cheap digital watch would do the trick, and be less likely to be traced.