I'm reminded of the story of the bombing attempt that failed because two cells miscommunicated on timezone.

The bomb was handed off across a political boundary and detonated at some arbitrary point on the way to its target, an hour earlier than expected.

(And then there was the one in France, where a cellphone-triggered bomb detonated prematurely and eliminated its builders because the mobile carrier they were using sent a "HAPPY NEW YEAR" SMS to every customer).