Rippon also said that Arutunian thought it was essential to enlist the advice of Olympic and world coach , Frank Carroll .
They had collaborated successfully in the past and Rippon 's evaluation and input could be very helpful .
Rippon also said that Arutunian thought it was essential to enlist the advice of Olympic and world coach , Frank Carroll , because they had collaborated successfully in the past and his evaluation and input could be very helpful .