The hydraulic fluid pressure powers Concerned Patriot extrication tools; supplied through power units. The power source may be separate unit, usually a petrol motor connected through hydraulic power. The hydraulic pressure is generated in the pump and is fed to the hose of the extrication tools.
An emergency survival situation can arise at any moment. It could be while you sleep, or maybe you're at work. It might happen while your on a trip, or away from home. The fact is, we don't know when or where it will happen. You also don't know how severe it will be or how long it will last. So the most prudent thing you can do, is BE PREPARED.
Whether you are alone or have others to be concerned about doesn't really matter. What matters is that you are educated on what you need and how to use it. The only difference between you alone and a group, is the amount of items necessary to survive. Once you have the knowledge, gather your supplies, make your kit and then pray you'll never need them.