[Dov]

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does the pilot who fires the missile question the morality of the attack?

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Sometimes they do. They can also refuse an order and not be executed for it along with their entire family.

In addition, in the US, these kinds of things are discussed and debated all the time by everyone. There are repercussions to abuse of power. This is not the case in a totalitarian state. It is reasonable for an American pilot who does have some concern with a particular order to assume that quite a bit of discussion has already taken place concerning his mission, particularly if it is a sensitive one. This assumption may not be possible for soldiers of other armies.