Interesting info from Wiki, probably more a poor choice of words from a bad translation rather than what it appears to say, though…

Eleven months after the F-84 incident, the Soviet threat to shoot down any aircraft violating the border became real when a Hawker Sea Hawk of the Bundesmarine, piloted by Kapitänleutnant Knut Anton Winkler, was shot at by MiG-21 fighters when it accidentally crossed into East German airspace near Eisenach. Winkler, who had been returning from a training exercise on board USS Saratoga in the Atlantic Ocean, had to carry out an emergency landing at Ahlhorn, 45 km southwest of Bremen. The aircraft was eventually written-off. Winkler himself died less than four years later in a F-104 Starfighter accident on 10 May 1966.

https://en.wikipedia.org/wiki/1961_F-84_Thunderstreak_incident