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It's utter boleaux, but folk in the UK are used to it- or ought to be by now...
Last time I heard that lovely J-79 howl, was when a pair of F-104S arrived for the Leuchars show a few (?) years ago. Brought back memories, and its a magic sound.
Before that, I remember a guided tour of SAL one evening with my Dad, back when they were refurbishing the RCAF fleet. 104s were a common sight at Prestwick then, and featured in every visit. The chap showing us around a Starfighter under maintenance pointed to an exposed actuator in the fin- that's known as a 'Cadillac valve' he said. Costs the same as a Cadillac!
Still, the Worlds hottest fighter!