Ground crew work in the hold of an aircraft operated by Olympic Air SA, a unit of Aegean Airlines Ltd., at Santorini airport on the island of Santorini, Greece, on Thursday, May 21, 2015. Greece will continue with efforts to privatize the country's largest port and regional airports as it seeks ways to attract investment for other state assets, Economy Minister George Stathakis said, in a government concession in talks with its creditors. Photographer: Yorgos Karahalis/Bloomberg via Getty Images