It depends on the nature of the disaster and the individual nurses family situation. If there is good family support at home (parents, spouse, siblings) the nurse should report to work. But if you are a single mom, your kids are young, and there is no guarantee you are going to be back at a specified time, you responsibility is to your family. It may be possible in some situations with older children to bring them with you. You may have a neighbor or friend who will keep them. But small children need a parent near in scarry times. Personally, I went to work on 9-11. My kids were teenagers and I felt it was best to have them in a supervised envirornment if there were any further events. It was unlikely here on the west coast, but I worked in a town that had a very large military base nearby.