ULA defends Air Force's "block buy" rocket contract(spaceflightnow.com)
spaceflightnow.com
ULA defends Air Force's "block buy" rocket contract
http://spaceflightnow.com/news/n1404/29ulablockbuy/
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http://spaceflightnow.com/news/n1404/29ulablockbuy/
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