The first man to sign up for the job is Jackson Harkness, a soldier who has worked with Douglas before. At the beginning of the film, Harkness has to stand by and watch as his brother is tortured and killed by Cordoba. Douglas ordered him not to step in because they were undercover as sympathizers in the enemy camp and could not afford to make their true intentions known. As a result, Harkness vows vengeance on the captain and will not leave his side until the opportunity presents itself.