<p>Firefighters from departments outside New York climb towards the 72nd floor of 4 World Trade Center during the "Runyon Up," Thursday, in New York.</p>
April 5, 2014
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April 5, 2014 9 p.m.
Hundreds make World Trade Center tower climb
More than 700 take part in 'Runyon Up' fundraiser
NEW YORK - They're high steppers of a different sort.