According to this publication two U.S. Air Force electronic monitoring aircraft (RC-135 Rivet Joint) have been leased to fill in because of shortages. The aircraft will have joint British and American crews, but will be painted in Royal Air Force colors.
US aircraft in UK colours - so who owns it?
US and UK crews - so who tasks it? And who fix's it? ROE's?
I'm all for Combined/Joint/Coalition etc etc but I do hope someone somewhere has got the management chain well and truly nailed down! Potential for some large SNAFU's methinks.