My two girls who live in OKC do. I don't. We are in a new place and haven't gotten one yet. My oldest son is out of the Army and with us for a few months till he gets married and the house they are going to live in has a basement. The other four live in towns that don't really support tornados.
The truth is having lived with the threat our whole lives you get jaded to it just like everyone does with the threats that are issues in their part of the country. What is funny to those of us around here is the thought of living where they have earthquakes is nuts.
I give regularly to the Red Cross because they are always quick to get on scene and they help internationally.
Everyone remember those who gave everything for our freedom on this Memorial Day.