Andrew Clarke has resigned as president and chief executive officer of Panther Expedited Services, while R. Louis Schneeberger has been promoted to take over this role. Edward Wadel, the company’s former chief information officer, is the new chief operating officer. No reason was given for Clarke's resignation. He had served as president since 2006 and CEO since 2007. When Clarke was appointed CEO, he took over for founder Daniel Sokolowsk...