Thunderbirds were great  . I used to love watching them through the late 60's and in the 70's.  I still watch reruns sometimes when I happen to find them on the idiot box. Sorry to hear Gerry has passed on but at least he had a good innings and left a legacy that far as I know is still unique in the land of TV ?
I was always surprised at the level of detail and intricacy built into the sets as well as the Supermarionation .