| Title | Fellow |
| Start Date | 2012-00-00 |
| Notes | In 2012, Harker was named a fellow of the Institute for Operations Research and the Management Sciences (INFORMS) and a charter fellow of the National Academy of Inventors. He was also named a White House fellow by President George H. W. Bush in 1991 and served as a special assistant to FBI Director William S. Sessions from 1991 to 1992. |