Reuters reports that “a high-tech sea-based U.S. military radar has left Hawaii to monitor for potential North Korean intercontinental ballistic missile test launches, a U.S. defense official said on Wednesday.”

“Earlier this month, North Korean leader Kim Jong Un said that the isolated, nuclear-capable country was close to test-launching an intercontinental ballistic missile (ICBM).”

“The official, speaking on condition of anonymity, said the radar, known as the Sea-based X-band radar (SBX), left on Monday and would reach its destination, about 2,000 miles (3,218 km) northwest of Hawaii, towards the end of January.”