https://en.wikipedia.org/wiki/The_Moon_Is_a_Harsh_Mistress https://en.wikipedia.org/wiki/The_Moon_Is_a_Harsh_Mistress Mike, the protagonist of this book, runs

https://en.wikipedia.org/wiki/The_Moon_Is_a_Harsh_Mistress https://en.wikipedia.org/wiki/The_Moon_Is_a_Harsh_Mistress Mike, the protagonist of this book, runs the catapult on the moon, among other duties.