One of the biggest controversies in the survival community is should you bug in or bug out, and there are countless arguments for both options. Your decision should be based on what makes sense and not what is more convenient.
Do not hesitate and get out while you can at the first sign of trouble. In the worst case scenario you have made the trip to your BOL (or friends or family located outside of the urban area) for no reason. In the best case scenario this trip has saved your life.
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