US supermarket chain Kroger is fighting fit. The company has been growing market share for a number of quarters and a focus on expanding its store count has fuelled further expansion. The news CEO Dave Dillon is standing down will see him go out on top. Waiting in the wings is chief operating officer Rodney McMullen. The long-time Kroger executive represents a safe pair of hands as the retailer pushes on with its growth plans. Katy Askew reports.