Permian Underground Machines & Pipes Co. (PUMP) is in the oil and gas equipment and services industry. It is considering a new oilfield services operation in the Permian Basin. This project would require an outlay of $50 million. Suppose that PUMP hires Moodys to assess the companys credit quality if it were to issue the bonds. Moodys advises PUMP that it would rate its bonds as Ba. Managers at PUMP consider issuing a 20-year bond. Currently, the yield on a U.S. Treasury bond with about 20 years to maturity is 1.81%. Estimate the required rate of return for the bond that PUMP managers are considering.