Originally Posted by
Arcanum
Not a national emergency, however I recall a GR4 was used a few years back in Wales as part of a search for a missing child (Ian Huntley case?). Protector might be more useful in this scenario.
Might also be useful for searching for survivors in a major flood.
The April Jones murder I think.
I believe one was also used in the hunt for the oxygen thief Raoul Moat.