On the morning of September 11, 2001, 25-year-old Andrea Haberman was sitting in an office on the 92nd floor of the North Tower.
At 9:00 a.m., she took out her phone and called her fiance as part of a little game they had to see who could call the other first in the morning when one was out of town.
Andrea won, but 40 minutes later, a plane slammed into the tower, leaving no chance for escape. Months later, workers at Ground Zero found her phone.
See more of the most powerful artifacts from 9/11: https://bit.ly/2WZdksg