1) British aerobatic team
Found on
https://www.crosswordclues.com/clue/yellowjacks
The Yellowjacks were a Royal Air Force aerobatic display team who flew Folland Gnat trainers painted yellow. The team was formed informally in the summer of 1963 by a group of flying instructors, led by Flight Lieutenant Lee Jones, at No 4 Flying Training School at RAF Valley. The two-seat Gnat T.1 had been in service at Valley only since February...
Found on
http://en.wikipedia.org/wiki/Yellowjacks
No exact match found.
