First Name William Last Name Knappenberger Year Earned: 1999 Bio Has enlisted with the U.S.M.C. will be leaving Aug. 17 1999. Contributor William Knappenberger Score Score of 3.0 from 1 reviews. How would you rate this item? - - VOTE!! - - 1 Star 2 Star 3 Star 4 Star 5 Star (Best) Click here to report possible copyright violations.