Expert caught in jet lies about missiles (11)

I believe the answer is:

projectiles

I'm a little stuck... Click here to teach me more about this clue!

'missiles' is the definition.
('projectile' can be a synonym of 'missile')

'expert caught in jet lies' is the wordplay.
I cannot really understand how this works, but
'expert' could be 'pro' (short for professional) and 'pro' is found within the answer.
'caught' could be 'ct' and 'ct' is present in the answer.
an anagram of 'lies' is 'iles' which is located in the answer.
This may be the basis of the clue (or it may be nonsense).

'about' acts as a link.

Can you help me to learn more?

I've seen this clue in the Sydney Morning Herald.

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