Many Catholics I know across the US, from coast to coast, have bought what they think are safe places.
Safe havens will be rare and depend on supporting communities. I was talking with someone about being self-sufficient today. Very few families are ready. They need to be ready now.
Last Christmas, some friends of mine have a mother who bought them all bug-out bags as Christmas presents.
After some thought and prayer, here are my suggestions with the help of some sites.
First of all, if you are in the country in what you consider is a safe haven, have up to six months provisions, including fuel and food.
Second, make sure you have a BOB with Catholic things added, like your sacramental documents, holy water, rosary, crucifix, breviary, missal, Bible.
Here are some suggestions from http://survivalcache.com/bug-out-bag/