Thanks dctyke, and I absolutely understand the system you describe. I have to assume though that all those aircraft you so despatched were otherwise airworthy. That is the query I raise with these Sentinels; not their serviceability, not their Red/Green entries, not their deferred defects, just are they airworthy? Presumably the Military Regulator knows the answer to that. Presumably the US Army needs to know the answer to that.
Depending on the intended routeing through UK airspace, those resident below their track might wish to know the answer to that. I know I would. Maybe I do need to know the answer. Perhaps the CAA, if they are to issue the Permit to Fly, will tell us?