There is no preparation for nuclear war besides living each day as though you may die at any time - because you might. We are all far more likely to die in an automobile accident, in an accident at home, or from disease. https://www.cdc.gov/nchs/fastats/leading-causes-of-death.htm Therefore, keep your soul constantly prepared for death.If you're waiting for this site to go to Defcon 2 before you act I think you're missing the point of being prepared for a possible Nuclear war.
As far as this site is concerned and it's number, use the site as a news and rumor aggregator for your entertainment. Don't sit up at night worried about war and don't make your decisions based on a number at a site.