US Aircraft Reportedly 'Sniffs' Korean Skies for Evidence of Nuke Test

The U.S. reportedly was sending a WC-135 "sniffer" plane Wednesday to check on North Korea's claim of setting off an underground hydrogen bomb as Defense Secretary Ashton Carter and his South Korean counterpart conferred on a possible response. Susan Romano, a spokeswoman for the Air Force Technical Applications Center, said that the Air Force "as a matter of policy" does not discuss the operations of the WC-135 Constant Phoenix.

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