I'm currently reading my copy of Lights Out by David Crawford aka: Halfast for either the 5th or 6th time since I got it. Each time I read it I learn something new or figure out something I didn't before. I was wondering what anyone else has learned from it as well. This last time reading it I learned/figured out.. 1. If you are a Family Unit then like Mark & Jim in the book, its best to be a Two Family Unit. That way if something happens to the Adult Male of one Family Unit, that Family Unit can still be taken care of by the Adult Male of the other Family Unit. 2. I'm ordering Night Sights for at least one my AR-15s very soon. As in the book they didn't realize until too late about fighting in the dark. So, what has everybody else learned from the book?