Two Hungarian Gripen fighter jets were scrambled on September 25 from Šiauliai Air Base in Lithuania as part of NATO’s Baltic Air Policing mission, NATO Air Command reported on September 25.
The jets intercepted a formation of Russian aircraft—including a Su-30, a Su-35, and three MiG-31s—flying near Latvian airspace.
That’s exactly what it means but in reference to the crew not the planes.
https://www.etymonline.com/word/scramble
https://youtu.be/KoWc_kjblVI