Crews work during a rehearsal at the University of Denver in Denver, 

Crews work during a rehearsal at the University of Denver in Denver, Tuesday, Oct. 2, 2012, where the first presidential debate between President Barack Obama and Republican presidential candidate Mitt Romney is scheduled for Oct. 3.  (AP Photo/Ed Andrieski)
Associated Press
Crews work during a rehearsal at the University of Denver in Denver, Tuesday, Oct. 2, 2012, where the first presidential debate between President Barack Obama and Republican presidential candidate Mitt Romney is scheduled for Oct. 3. (AP Photo/Ed Andrieski)
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