Former CIA employee who made global headlines in June 2013 when he told the media about the National Security Agency's aggressive tactics.
He joined the U.S. Army, but was discharged after seriously injuring himself during training.
He released highly secretive information about the NSA's tracking techniques to journalist Glenn Greenwald.
His dad worked in the U.S. Coast Guard and his mother worked for the District Court of Maryland.
He and Julian Assange are both known for revealing government secrets to the world.