Some great answers in here, but I don’t see anyone addressing the ‘military target’ portion of the question. Aircraft carriers are some of the most well guarded things on the planet. The US military for example always has them surrounded with many, many other vessels that have a myriad of functions including supply and defense. See: [https://en.wikipedia.org/wiki/Carrier_battle_group](https://en.wikipedia.org/wiki/Carrier_battle_group)
Land based nuclear reactors are likely much easier targets for certain types of attacks.
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