Just being prepared makes you a prepper; no matter what time frame you're prepared for. We decided some time ago to be ready for whatever. We can go 6 months if needed...maybe a year with rationing. That should take us well past most folks ability to survive; and we are also prepared to defend it.
We have enough water to hit that 30 day mark. With more we could extend that time out pretty far and yes we are ready to defend it.
Water is the key.