Spock receives a commendation for his actions in The Immunity Syndrome. He also receives an offer of his own captaincy, of a new all-Vulcan ship. Kirk is in agony over this, but resolves not to attempt to influence Spock's choice, and to support him in his decision. When Spock attempts to talk to Kirk about it, Kirk believes that Spock has decided to take the position, but later Spock reveals that he has declined, because he is "content to serve aboard the ENTERPRISE under Captain James T. Kirk.".