Unlike their usual MO, the IMF team gets away in a jet airplane rather than a truck.
One of the rare episodes that begins mid-mission as opposed to beginning with a "good luck, Jim" recording.
The polka playing in Eric Schilling's club is the same one that was played by the band in My Friend, My Enemy (1970). It also was heard in the background in Decoy (1970).
When Paris retrieves the weapon component from Schilling at the airport counter, he is wearing the same disguise from a previous show, "The Decoy".
When Col. Eckert orders the country locked down, the wall map he points to is actually a slightly doctored map of Budapest, Hungary. The river in the center is marked "Duna" which is the Hungarian name for the Danube River. The fictional "Dornberg Airport" he points to on the map is roughly in the position of Fiume Road National Graveyard and Budapest Keleti rail station in Budapest.