The Global Business Travel Association (GBTA), the voice of the business travel industry, today announced the speakers for the "Luminaries of Travel CEO" panel to be held on July 24th, during GBTA Convention in Boston, Massachusetts. Trip Davis, President and Senior Associate Dean for external relations of the Darden School Foundation will moderate the panel with leaders of major travel suppliers including Barney Harford, CEO of Orbitz Worldwide, Luis Maroto, President and CEO of Amadeus, and Arne Sorenson, President and CEO of Marriott International, Inc. The panel is made possible by BMO Financial Group.