This will depend on such technologies as space-based surveillance, direct broadcasting, high-speed computers and, above all, the ability to integrate complex information systems.

ECONOMIST: As China rises, must others bow? | The

William Campbell, the Army's director of information systems for command, control, communications and computers.

CNN: DOD overhauls network to thwart hackers

Its mission was redefined several times, and it was finally seen as a way to test the use of computers in military combat information systems.

CNN: Machines on a mission

July 2006: US media reports that intruders penetrate the US Department of State (DoS) networks, stealing sensitive information and user login credentials, and install backdoors on numerous computers, allowing them to return to the systems at will.

FORBES: Congress Bans Scientific Collaboration with China, Cites High Espionage Risks