Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : F 5 Ljungbyhed, Kungliga Krigsflygskolan, Royal Air Force Flight Academy, or simply ''F 5'', is a former Swedish Air Force training wing with the main base located in Ljungbyhed in southern Sweden.
Answer : Swedish Air Force
What military organization did F 5 Ljungbyhed belong to?