An emergency can arise for various reasons and often with little or no warning. In such circumstances, it is important that each and every one of us can fend for ourselves for a few days without outside help. We need to prepare ourselves to be without electricity and water for at least 3 days. 

By being able to fend for ourselves for a few days, we ease the pressure on emergency responders, who can then attend to those in a worse situation, and it will also be easier to deal with the situation.