(AP) — The U.S. Navy says four people have died in the crash of a contractor’s helicopter on the Hawaiʻi island of Kauaʻi. The Pacific Missile Range Facility says the aircraft crashed on the north side of the installation shortly after 10 a.m. There were no survivors. The names of those killed were not yet available. The helicopter was being flown by Croman Corp. in support of a training operation. The National Transportation Safety Board says in a tweet the agency is investigating the crash of the Sikorsky S-61N helicopter. The missile range facility says an investigation will be conducted to determine the cause of the accident.

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