This episode marks one of the few times Thunderbird 1 acts as a full-blown fighter plane. It is the only time she is ever shown making a strafing run.
As this episode features Alan collecting Grandma Tracy who is to join the IR team, it should be shown before Day of Disaster.
Forced air jets, the mainstay of many a stage magic production, are used as a rescue device in quite an interesting way here.
The relationship between Alan and Tin Tin is openly touched on a few times in this episode rather than just being hinted at.
Virgil's cubist style masterpiece (reminiscent of works by Picasso and other artists) was an early 20th century painting style. So, as Alan remarks, by the time the series is set in the future, the technique would have been at least a century out of date.