The Commander of NASA's space shuttle "Endeavour", Mark Kelly, addresses the media shortly after arriving the Kennedy Space Center on April 26, 2011. Kelly will fly Endeavour and her crew on a fourteen day mission which is scheduled for launch at 3:47 pm on April 29. This is Endeavour's twenty fifth and final mission, and is set to deliver the Alpha Magnetic Spectrometer and a pallet called the Express Logistics Carrier #3, which will contain spare parts to equip the outpost after the shuttle program ends later this year. (UPI Photo / Joe Marino, Bill Cantrell)
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