> This seems tragic to me. I can't believe someone would "order" him back into the silo to turn on an exhaust fan. First, starting a fan motor inside of an explosive environment can be dangerous. Second, how could someone have such disregard for another person's life, that they send him into a room full of explosive gas?

This is the military: it’s sad but not out of scope to order someone to do something dangerous, or even likely fatal, in order to accomplish an objective. Consider “you stay here with this machine gun while the rest of us go back the way we came.”