FILE - In this April 15, 2010 file photo, President Barack Obama, left, and Apollo 11 astronaut Edwin "Buzz" Aldrin walk toward Air Force One at Andrews Air Force Base, Md., for a day trip to Florida.... more 
FILE - In this April 15, 2010 file photo, President Barack Obama, left, and Apollo 11 astronaut Edwin "Buzz" Aldrin walk toward Air Force One at Andrews Air Force Base, Md., for a day trip to Florida. Aldrin, 84, is asking everyone to remember where they were when he and Neil Armstrong became the first humans to walk on the moon and to share their memories online. (AP Photo/Luis M. Alvarez, File) less 
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Associated Press | Photo By Luis M. Alvarez, File
Wed, Jul 16, 2014 4:39 PM EDT