An F-16 fighter jet crashed in the desert town of Trona on Wednesday, authorities said.

The pilot safely ejected from the aircraft and was in stable condition, according to U.S. Air Force Sgt. Jovante Johnson. The F-16C Fighting Falcon was assigned to the Air Force Thunderbirds, an aerial acrobatic demonstration team based at Nellis Air Force Base in Las Vegas, Johnson said in an email.

The crash took place at around 10:45 a.m. during a training mission, he wrote. The cause of the crash is under investigation.

A motorist, Darren Springer, 60, said he was driving south out of Death Valley when he saw an explosion that sent up a thick plume of black smoke. “My heart sank,” he said.

He looked through a pair of binoculars and saw the wreckage of a fighter jet strewn across the desert floor

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