VIDEO: It takes bold window washers to clean the Grand Canyon

VIDEO: It takes bold window washers to clean the Grand Canyon

VIDEO: It takes bold window washers to clean the Grand Canyon

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VIDEO: It takes bold window washers to clean the Grand Canyon

VIDEO: It takes bold window washers to clean the Grand Canyon
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'Let us never fear to negotiate' -- Obama quoting Kennedy at Institute dedication

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'Let us never fear to negotiate' -- Obama quoting Kennedy at Institute dedication