Well a lot depends upon the size of the disaster. The bigger it is the less help you can expect.

Well the first thing that government types will want you to do is move to a shelter where they can control you. As you enter your possessions will be searched and anything that might be dangorous will be confiscated. Read anything the searcher take a fancy to will be classed as contraban. Forget firearms anything that is even hints at being sharp will be long gone. Think boarding an airplane. Further more if deemed you have more than others in the way of supplies they will be destributed for the good of all. About all you will have are the cloths on your back and maybe your own sheets and pillows.

No thank you very much!

If I do have to evac I'll take care of my own needs.