Most people would probably call prepping for an alien invasion silly, but with the release of those ufo documents, maybe it's not so foolish.
This pocket guide will give you some ideas that might help you survive an invasion of Earth by beings far more advanced than our own comparatively primitive civilization.
The way I see it, if you are ready for an alien invasion, you're prepared for just about anything!
Always my number one priority for any emergency, and certainly for an alien attack is have an emergency plan
Know what you will do if an invasion occurs.
Where will you go?
What supplies will you take?
How will you contact loved ones?