Ark Royal cross decked with USS Forrestal in the Med about 1973 (IIRC), and had a couple of F4's from VMFA-531 operating for a few days. Came time to go into Grand Harbour and one F4 went U/S, and went U/S and went U/S as we came very close to Dom Mintoff's anti-USA dominion. The only solution was to strike the offending machine into the lower hangar away from prying eyes whilst we were in Malta.
After a couple of days it was snuck into the upper hangar and repaired by 892, who had this really nice tail fin colour scheme. A few days before we departed Valletta a light grey RN F4 appeared on deck to carry out ground runs, with brown paper stuck just where USMC markings might have been
Within 2 hours of clearing the harbour, VMFA-531 CO's personal airplane was returned with one of the best zaps: so good, he took it all the way back home