Remember that any survival or disaster scenario you might have to face such as tornados, hurricanes, earthquakes, floods, civil unrest, war, destruction, fire, storms, zombie attacks, etc., are always compounded once daylight turns to night. With that said it is imperative that you are proficient with all of your survival gear in both the daylight hours and the night time hours. Survival will be hard enough when you can see, and when it is dark, it only adds to the misery and the stress. Know your gear and know how it operates, train regularly, and maintain your survival equipment. Most of all should a disaster situation occur; you must be mentally prepared to deal with the particular scenarios which you may have to face.
You can see all 5 of my post apocalyptic fiction books, 2 of my zombie fiction books and 1 of my horror fiction books on the left side of my blog page. Go ahead; take a chance and purchase one or more over at Amazon.com. They are really quite interesting to read if I do say so myself and they also make excellent gifts 🙂