Um, yeah, but the chances of that happening are pretty minute, especially if you know what you're doing. Heck, my dad and I just installed two toilets in our house ourselves. It wasn't really that hard, and we saved ourselves money by doing so.
Um, back on topic, my sister is currently in the Air Force, she considers it to be one of the best decisions she's made. She just graduated from tech school in Texas at the top of her class and is now working at a local base. And she has a college degree in psychology, by the way.