A long-standing member of French special forces GIGN, during the Mecca operation Lambert was not only the weapons and gas specialist, but also the main responsible for training the demoralized Saudi military. With his steadfast character and rigourous discipline, the down-to-earth Lambert succeeded in very little time to make the Saudis rediscover their morale and return to the fight. However, during his interactions with them in the days of the crisis their growing lack confidence in the regime was more than evident. In the final hours of the operation, Lambert had doubts he and is team would make it out of the kingdom alive.