Well remember a Det to Mildenhall in late-1970s when the Brit contingent got at CINCSAC's VC-135 and replaced the red centre of the fuselage stars and bars with a sticker announcing that the vehicle was "stolen from Willhire Van Rentals". Almighty sense of humour failure and witch hunt followed with the Brits assuming their best "What us guv" approach. We heard later that CINCSAC was quite amused by the zap but wondered how the Brits had circumvented the armed guards.
I do remember one aircraft being adorned and I cannot remember what it was, by the simply task sliding a plank across from wing tip to wing tip and while the guard patrolled below, mischief was being carried out above..