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Sen. John Glenn and Neil Armstrong in 2012

Sen. John Glenn and Neil Armstrong at 50th Anniversary Celebration of Friendship 7

Sen. John Glenn, left, and Apollo 11 Astronaut Neil Armstrong are seen prior to the start of a dinner at Ohio State University that honored the 50th anniversary of John Glenn's historic flight aboard Friendship 7 Monday, Feb. 20, 2012, in Columbus, Ohio. Glenn was the first American to orbit Earth.

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