Fantastic read. Word of warning. It doesn't have a continuous storyline as such, so you'll either enjoy it or put it down after the first chapter or two and never pick it up again.
[MENTION=138836]WC-Passion[/MENTION]
Here is a brief summary of the 'Catch'.
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Catch-22
* To avoid flying mission after after mission a pilot wishes to be grounded from combat flight.
* This will only happen if he is evaluated by the squadron's flight surgeon and found "unfit to fly".
* "Unfit" would be any pilot who is willing to fly such dangerous missions, as one would have to be mad to volunteer for possible death.
* However, to be evaluated, he must request the evaluation, an act that is considered sufficient proof for being declared sane.
* These conditions make it impossible to be declared "unfit".
* The "Catch-22" is that "anyone who wants to get out of combat duty isn't really crazy".
* Hence, pilots who request a mental fitness evaluation are sane, and therefore must fly in combat.
* At the same time, if an evaluation is not requested by the pilot, he will never receive one and thus can never be found insane, meaning he must also fly in combat.
* Therefore, Catch-22 ensures that no pilot can ever be grounded for being insane even if he is.