Henri Rousseau was a driver for René Benoit who died in the explosion while driving a car belonging to undercover NCIS Special Agent Anthony DiNozzo. When DiNozzo's colleagues got to the scene, they assumed that the burnt body was that of DiNozzo although during his autopsy, NCIS Medical Examiner, Dr. Donald Mallard realized that while the body had the same blood type as DiNozzo's, the body did not have scarring in his lungs as Tony had some during his near-fatal experience with Y.pestis which confirmed Ducky's theory that the body was not Tony's and that Tony himself was still alive.