South Korea Needs Multilayered Missile Defence South Korea needs a multilayered missile defence system to counter growing threats from North Korea by operating a combination of short- and long-range interceptors fired from different altitudes, a senior official at Lockheed Martin said Thursday.Orville Prins, vice president of business development for air and missile defence at the United States defence giant, said his company has had "serious and intense discussions" with the South Korean military to upgrade the current PAC-2 missiles to the PAC-3 system, South Korea's Yonhap News Agency reported.South Korea currently operates 48 PAC-2 missiles with blast-fragmentation warhead imported from Germany, which has an interception rate of less than 40 percent.

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