In this photo Tuesday, Dec. 10, 2013, photo, parts are removed from a retired American Airlines' jet engine in Roswell, New Mexico. Airlines are on the largest jet buying spree in the history of aviation, ordering more than 8,200 new planes with the old planes being sent to the desert where the dry air prevents the aluminum airframe from corroding and spare parts can be harvested or the old jets get chopped up for scrap metal. (AP Photo/LM Otero)
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