Deck 2 and Deck 3 are not the hotspots onboard, they're hot and humid and noisy. Supposedly the real missionaries on board are the ones who have to live on those 2 decks... :) A couple friends and I were special enough to receive a tour from Dennis, one of the Engineers. From the giant engines to the AC units to the welding shop to the incinerator, there is a lot going on. But, now I know what the alarm I occasionally hear is from: something is a little bit off with something. Yeah, I really don't know what I'm talking about. But it was really neat to see all that happens below us!