The fourth landing of the Columbia is the historical equivalent of the driving of the golden spike which completed the first transcontinental railroad. It marks our entrance into a new era.
Our nation is indeed fortunate that we can still draw on an immense reservoir of courage, character, and fortitude, that we are still blessed with heroes like those of the Space Shuttle Challenger. Man will continue his conquest of space. To reach out for new goals and ever-greater achievements, that is the way we shall commemorate our seven Challenger heroes.
The same technology transforming our lives can solve the greatest problem of the 20th century. A security shield can one day render nuclear weapons obsolete and free mankind from the prison of nuclear terror. America met one historic challenge and went to the Moon. Now America must meet another: to make our strategic defense real for all the citizens of planet Earth.
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