Exhibit 10 gives information about betas and debt/equity ratios for Boeing and comparable companies. Exhibit 11 provides data about Boeing’s outstanding debt issues. While Boeing’s marginal effective tax rate had been smaller in the past, it currently was expected to be 35%. In June 2003, the yield on the three-month U.S. Treasury bill was 0.85%, and the yield on the 30-year Treasury bond was 4.56%. On June 16, 2003, Boeing’s stock price closed at $36.41.