Read the case study below and Identify the roles change management roles as per AIM CAST Model.

British airway board hired John King as Chairperson in 1981 to overcome the problem of resource wastage and recurring loss. The chairperson restructured the business and reduced workforce. He led a team of managers who implemented the directions well. Further, they replaced old planes with new fast jets and eliminated non-profitable routes. Thus, through strong leadership and sequential change, the chairperson turned British airways into profitable business.