They probably all had little transponders implanted in their @ss when they were all given their medical shots before they left Gitmo.
Plane flys overhead and constantly pings, the XPDR's answer the ping back.
RFID, it's not just for Walmart anymore!
Good point. I certainly hope so. In which case, we should start a "catch and release" program, placing telemetry tags on their Islamist patooties.
If we didn't do this, we should have! At least we wouldn't have put panties on their heads...