Shelley - here's a couple of questions for you to consider, since it's clear you haven't: How often do submarines actually "Go active," that is, use active soar versus passive sonar (spoiler alert: not much). Here's another one: How much waste and impact do you think a submarine or nuclear aircraft carrier (both of which are nuclear) give off compared to all those Holland America tour boats that you love to see pulling in every year?
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I think it's time certain segments of the population educate themselves on the actual harm our armed forces have on the environment, versus just their own perceived harm.