ALIEN INVASION

The world’s top experts predict the impact that contact with an advanced alien race could have.  Astrophysicists, weapon designers, military strategists, biologists and anthropologists break down the likely sequence of events mankind would face, and collaborate on ways to survive an extra-terrestrial attack.  Experts believe major cities would be attacked first, as well as our entire infrastructure.  Without power, oil or the ability to communicate, how would we keep human civilization from being eliminated?