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Since 1999, the Missile Defense Agency and the Corps' Alaska District have collaborated to design and construct infrastructure to bolster the nation's defense posture against foreign-launched missile systems. Since then, the district has designed six facilities, completed 63 projects and are actively engaged in 13 other missile defense-related construction efforts such as Clear Air Force Station's $347 million Long Range Discrimination Radar complex. The two agencies' combined efforts to date have resulted in the design and construction of missile defense facilities in Alaska valued at about $1.26 billion.