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<classification authority="sudocs">GA 1.13:GAO-06-666</classification>
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 <subject>Command and control systems</subject>
 <subject>Computer systems</subject>
 <subject>Cost overruns</subject>
 <subject>Defense capabilities</subject>
 <subject>Schedule slippages</subject>
 <subject>Program evaluation</subject>
 <subject>Program management</subject>
 <subject>Defense procurement</subject>
 <subject>Systems conversions</subject>
 <subject>Technology modernization programs</subject>
 <subject>Cheyenne Mountain (WY)</subject>
 <subject>Combatant Commanders&apos; Integrated Command</subject>
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 <title>Defense Acquisitions: Further Management and Oversight Changes Needed for Efforts to Modernize Cheyenne Mountain Attack Warning Systems</title>
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<abstract>The Cheyenne Mountain Operations Center houses numerous complex
computer systems for tracking air, missile, and space events that
could threaten homeland security or undermine military operations
in theater. To ensure this mission can be met, the systems	 
require ongoing upgrades. The most recent upgrade program--the	 
Combatant Commanders&apos; Integrated Command and Control System	 
(CCIC2S)--was initiated in 2000. Given the critical missions	 
supported by Cheyenne Mountain systems, GAO initiated a review to
(1) determine the status of the CCIC2S program in terms of	 
meeting its cost, schedule, and performance goals; (2) gauge the 
extent to which DOD has followed best practices in managing	 
program requirements; and (3) assess DOD&apos;s control and oversight 
mechanisms for CCIC2S.</abstract>
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<subject>
 <topic>Command and control systems</topic>
 <topic>Computer systems</topic>
 <topic>Cost overruns</topic>
 <topic>Defense capabilities</topic>
 <topic>Schedule slippages</topic>
 <topic>Program evaluation</topic>
 <topic>Program management</topic>
 <topic>Defense procurement</topic>
 <topic>Systems conversions</topic>
 <topic>Technology modernization programs</topic>
 <topic>Cheyenne Mountain (WY)</topic>
 <topic>Combatant Commanders&apos; Integrated Command</topic>
 <topic>and Control System</topic>
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