The headstones of Virgil "Gus" Grissom, left, and Roger Chaffee are seen after a wreath laying ceremony that was part of NASA's Day of Remembrance, Friday, Feb. 1, 2013, at Arlington National Cemetery. Wreathes were laid in memory of those men and women who lost their lives in the quest for space exploration. Photo Credit: (NASA/Bill Ingalls)
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