Save up some cash and build yourself an underground bunker somewhere on your land. Preferably surrounded by woods and at somewhat of a high point. Like others have said, stock up on non perishable food items. Learn to hunt and grow food without all the fancy stuff. Basically teach your children to learn how to live off the land like our ancestors once did. AND stock up on guns and ammo. Get yourself a good machine gun as well. Teach yourself some first aid and stock up on that stuff too. And last but not least, don’t let your children be soft. Teach them to be survivors and give them lessons in killing. Because when that day does come, you don’t want them to freeze up. Teach them to respond to commands quickly and without hesitation. You’ll have yourself one good little fireteam. Good luck. Because it’s coming.