Include 2 sheets in code loop?

I am using the following code to change the charts in the sheet "DashBoardOne". I want to include the sheet "DashBoardTwo" in the code. Can someone please advise how I change line 3 to include the additional sheet?

Sub ColumnCharts()
    Application.ScreenUpdating = False
    Dim Cht As ChartObject
    For Each Cht In Sheets("DashBoardOne").ChartObjects
        Cht.Chart.ChartType = xlColumnClustered
    Next Cht
End Sub

Thanks in advance.