What if an extra-terrestrial force attacked Earth? What might that look like and how will the people of Earth respond? Consulting a cast of world-renowned scientists, survival experts and defense experts, National Geographic explores this frightening scenario. Experts reveal what could motivate alien invaders to attack Earth, and speculate on how the attack might play out, the strategy alien invaders might use, and the most effective ways for humans to respond.
as Narrator (voice)
as Self - SETI Institute
as Self - U.K. Ministry of Defense
as Self - Director of Defense Studies, West Point
as Self - Theoretical Physicist (archive footage)
as Self - USAF Air Command and Staff College
as Self - Physicist & Author
as Self - Co-Author, Alien Invasion: How to Defend Earth
as Self - Author, Contact with Alien Civilizations
as Self
as Self - Author, Live Free or Die
as Self - Author: Adventures Among Ants
as Self - Washington State University
as Self - Author, Emergency
as Self - onPoint Tactical
as Self - Gunnery Sergeant, USMC
as Self - High Altitude Research Corp.
as Survivor
as Laboratory Scientist
as Survivor
as Scientist
as Survivor
as News Correspondent
as Survivor
as Resistance Leader
as Survival Expert
as Resistance Fighter
as Survivor
as Survivor
as Astronomer
as Survivor
as Resistance Fighter
as Agent Patterson
as Survivor
as Human Resistance Leader
