Excited, shot into the air (5,2)

I believe the answer is:

fired up

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'excited' is the definition.
The answer and definition can be both to do with human feelings as well as being past participle verbs.
Perhaps there's a link between them I don't understand?

'shot into the air' is the wordplay.
'shot' becomes 'fired' (firing is a kind of shooting).
'into the air' becomes 'up'.
'fired'+'up'='FIRED UP'

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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