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I don’t think most people who join the AF have this in mind and far greater than 99% of them their life won’t ‘be sacrificed’ - i.e. they’ll do their duty, survive it, and then enter civilain life. The thought probably occurs to some AF personnel who are in the higher risk jobs such as flying or providing ground security in a war zone but the vast majority of AF personnel won’t be exposed to overt ‘life sacrificing’ circumstances.</p>