The Pentagon's technology chief, who worked on the Strategic Defense Initiative in the 1980s, says past cost estimates of space-based missile defense interceptors are overblown, as he believes a constellation of 1,000 interceptors could cost $20 billion. Michael Griffin, the under secretary of defense for research and engineering, revealed his cost estimate during a Sept. 4 meeting hosted by the Missile Defense Advocacy Alliance on Capitol Hill. "I am very, very, very, very tired of people who say that we...
