USA -- Neil Armstrong's friends, NASA colleagues and admirers around the country say the former astronaut was a humble pilot who served his country above all.
His shuttle colleagues Buzz Aldrin and Michael Collins said Saturday that they will miss a dedicated, smart and careful astronaut and friend.
John Glenn is remembering his close friend and fellow astronaut as a man who was "dedicated enough to dare greatly."
President Barack Obama is hailing the late astronaut as one of America's greatest heroes, one who delivered what he called "a moment of human achievement that will never be forgotten."
Mitt Romney is echoing those sentiments. The Republican presidential candidate says Armstrong takes his place in the "hall of heroes," adding that he found Armstrong's passion for space, science and discovery inspiring.
U.S. Senator Dean Heller issued a statement in light of Armstrong's passing. He said that "Mr. Armstrong was an icon of American heroism who will always be remembered for those first few brave steps on the moon."
In Washington, D.C., tourist Jonathon Lack from Alaska said he decided to tour the Air and Space Museum after hearing of Armstrong's death. He says he sees in Armstrong's death a reminder of an America where people dreamed big things and sought to accomplish the inconceivable.
At the Armstrong Air and Space Museum in Ohio, a black ribbon hung over a plaque of Armstrong in the museum's entryway and a U.S. flag was lowered in Armstrong's memory.
The first man to walk on the moon, Armstrong died Saturday at the age of 82.