Everyone/map I've seen seems to agree with Suspicious Observer, the military, etc. The east coast will be gone, the areas out towards Nevada/New Meixco/Colorado (where all the elites have already staked their flags) is projected to be best bet.
It's funny, you can see a trend across YouTube of people getting into sailing or building large sailing vessels. An account, known as SVSeeker actually slipped and inferred his dad may have been a C eye A agent and he's spent ten+ years building a steel sailboat.