A commenter from Jihad Watch pointed out the most obvious: We can easily determine the location of the MILF/ASG people who decapitated our Marines through their cellphones. Smart Telecoms does it all the time with Smart ZED Finder and their anti-carnapping system.
I'd say this is the best opportunity to use the new Anti-Terror Law to its fullest. Or perhaps better yet, transmit the exact coordinates to the Americans for a little cruise missile surprise. We can always claim that the missile was innocently cruising over the Jihadits' lair when it encountered mechanical problems and crashed and exploded.
I just hope the Marine's wife didn't delete the number yet.