He was looking at a copy of classified rules of engagement in Iraq from 2006, one of several secret American military documents that he was planning to post with the video.

NEWYORKER: No Secrets

The cybersecurity company tracked the attacks to specific networks in Shanghai and some to the headquarters of one of China's secret military groups.

CNN: Apple: We were hacked, too

The development of the atomic bomb at a secret site in Los Alamos, New Mexico is one of the great scientific and military accomplishments of the modern era.

FORBES: A Veterans Day Story: Immigrants and the Atomic Bomb