Four people were killed after the helicopter crashed during a training operation on the Hawaii island of Kauai, officials confirmed.
The incident occurred at the Pacific Missile Range Facility (PMRF), which is the "world's largest instrumented, multi-dimensional testing and training missile range," according to the U.S. Navy.
The Navy base is located in Kauai, Hawaii, and the crash occurred shortly after 10 a.m. local time on Tuesday, the Navy's Pacific Missile Range Facility said.
At the time of the incident, the helicopter—a Sikorsky S-61N—had been taking part in a range training operation on the base when it crashed on the northern side of the installation.
No one survived the crash.
The names of those killed in the incident have not yet been released.
The Epoch Times has contacted the Navy's Pacific Missile Range Facility for comment.
"For the Kauai Fire Department, the Waimea Fire Station's Engine 7 and Truck 7, along with the on-duty Battalion Chief initially responded to the scene, but their assistance was not required. The Navy continues to take the lead in responding to this incident," said Alden Alayvilla, Public Information Officer for the Office of the Mayor.
"First and foremost, our thoughts and prayers are with the families and friends of those who were lost this morning in this heartbreaking tragedy," Kawakami said. "I know there are no words that can express the extent of what you are going through or provide the solace that you need, but please know that our entire community is here for you."
"We offer our partners at PMRF any resources they may need, and we offer the families involved our deepest condolences during this difficult time," Kawakami added.