Republican presidential nominee Donald Trump and Democratic presidential nominee Hillary Clinton shake hands after the first presidential debate at Hofstra University on Sept. 26; 2016 in Hempstead, N.Y. (Photo by Mark Peterson/Redux for MSNBC)

Go inside the first presidential debate

Photographer Mark Peterson is there to catch the sights and sounds as NBC's Lester Holt grills each candidate on the issues facing our nation.

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