On August 31, 1997,Princess Dianatragically died after a car accident in Paris (viaThe Telegraph).

The only survivor was Trevor Rees-Jones, the princess’s bodyguard.

Speaking toThe Sunin 2017, Xavier Gourmelon, a Paris firefighter, recalled the night of the accident.

Princess Diana smiling

As a first responder, Gourmelon administered CPR to Diana after a cardiac arrest.

He was shocked to learn of her death hours later.

“To be honest I thought she would live,” Gourmelon said.

Princess Diana smiling

And the memory of that night will stay with me forever."

Trevor Rees-Jones, Diana’s bodyguard, was the only person in the vehicle wearing a seatbelt.

Jones suffered significant chest and head injuries, including amnesia.

Princess Diana looking serious

He was the only survivor the seatbelt and airbag saved his life (viaDaily Mail).

Shortly after the accident, aCNNcomputer simulation came to a similar conclusion on seat belts.

Princess Diana’s car was traveling between 70-100 miles per hour.

Dr. Richard Shepard, a forensic pathologist, agrees.

“He was incredibly co-operative because he had nothing to hide,” Stevens told the outlet.