A few months back, some troops driving a Humvee in Iraq got hit. The troops evacuated before a blast blew the doors off of the vehicle; only one of the soldiers sustained a shrapnel injury. As you'll see, the Humvee didn't make it, but a Garmin eTrex left behind in the wreckage still worked.
UPDATE: The photo of the Humvee has been removed because of the request of an army major citing a violation of "Operational Security restrictions." While we have doubts about the officialness of his request—especially since it was followed by the too-frequently-heard accusation that running this sort of image was a tactic of "our enemy"—we do not wish to be detained at Guantanamo Bay for questioning, so we have complied.