Ted's upset about the RAF being attacked (7)

I believe the answer is:

strafed

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'attacked' is the definition.
The answer and definition can be both related to competing as well as being past participle verbs.
Perhaps they are linked in a way I don't understand?

'ted's upset about the raf' is the wordplay.
'upset' indicates an anagram.
'about' is an insertion indicator.
'teds' with letters rearranged gives 'sted'.
'sted' going around 'raf' is 'STRAFED'.

'being' is the link.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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