Another important reason for BCal's decision to set up a Concorde task force was that the 1976 aviation policy review had exempted Concorde from the "spheres of influence" policy and therefore it was possible for BA to operate supersonic services to prime business and leisure destinations within BCal's sphere of influence, such as Lagos or Rio de Janeiro for example. To ward off this potential threat, BCal's senior management decided to develop its own Concorde plans, either independently or in partnership with BA.