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 <subject>Ballistic missiles</subject>
 <subject>Cost analysis</subject>
 <subject>Defense capabilities</subject>
 <subject>Operational testing</subject>
 <subject>Weapons research and development</subject>
 <subject>Weapons systems</subject>
 <subject>DOD Ground-based Midcourse Defense</subject>
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<titleInfo>
 <title>Missile Defense: Additional Knowledge Needed in Developing System for Intercepting Long-Range Missiles</title>
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<abstract>A number of countries hostile to the United States and its allies
have or will soon have missiles capable of delivering nuclear,	 
biological, or chemical weapons. To counter this threat, the	 
Department of Defense&apos;s (DOD&apos;s) Missile Defense Agency (MDA) is  
developing a system to defeat ballistic missiles. MDA expects to 
spend $50 billion over the next 5 years to develop and field this
system. A significant portion of these funds will be invested in 
the Ground-based Midcourse Defense (GMD) element. To field	 
elements as soon as practicable, MDA has adopted an acquisition  
strategy whereby capabilities are upgraded as new technologies	 
become available and is implementing it in 2-year blocks. Given  
the risks inherent to this strategy, GAO was asked to determine  
when MDA plans to demonstrate the maturity of technologies	 
critical to the performance of GMD&apos;s Block 2004 capability and to
identify the estimated costs to develop and field the GMD element
and any significant risks with the estimate.</abstract>
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 <searchTitle>GAO-03-600; Missile Defense: Additional Knowledge Needed in Developing System for Intercepting Long-Range Missiles;
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 <topic>Ballistic missiles</topic>
 <topic>Cost analysis</topic>
 <topic>Defense capabilities</topic>
 <topic>Operational testing</topic>
 <topic>Weapons research and development</topic>
 <topic>Weapons systems</topic>
 <topic>DOD Ground-based Midcourse Defense</topic>
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