If you're like many people, you have chosen to purchase a gun safe to keep your guns and valuables secure in your home. But in the event of a national emergency, like an EMP attack, if you have an electronic lock on your safe, you might not be able to open it. This would definitely be a time where you might need to access cash that you have stashed away for an emergency because ATMs are likely to be rendered useless. Plus, you'll want to be able to access your guns to protect your family and home if needed. So, what can you do?