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NASA's plane emergency locator test could save lives

While the world is waiting to learn more about the wreckage of Malaysia Airlines Flight 370, NASA is on a dramatic mission of its own involving small plane crashes. The space agency wants to improve the tiny transmitters on board, designed to alert satellites within seconds of an accident. Kris Van Cleave reports from NASA's Langley Research Center in Virginia, where they are crashing planes to find answers.
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