The four-member crew, aboard a Marine Corps helicopter that has crashed in Southern California, is presumed dead.
The CH-53E Super Stallion helicopter from the 3rd Marine Aircraft Wing went down near California’s El Centro city during what officials called a routine training mission, reported the Los Angeles Times.
The CH-53E is largest and heaviest helicopter in the U.S. military.
The names of the victims weren’t made public pending positive identification and notification of their families, which reportedly quintessentially takes about 24 hours.
The name of the crew’s squadron and the base from which it flew were also withheld by the Marine officials.
An investigation into the crash is underway.