Aircraft models are seen following a news conference to announce the sale of Virgin Atlantic airline to Delta Air Lines, in New York December 11, 2012. Delta Air Lines is buying Singapore Airlines’ 49 percent stake in Virgin Atlantic for $360 million and has agreed to a transatlantic joint venture with the British carrier, expanding its access to London’s capacity-constrained Heathrow airport. REUTERS/Brendan McDermid (UNITED STATES – Tags: TRANSPORT BUSINESS)