Elyn Zimmerman will never forget the exact moment when, on February 26, 1993, a truck bomb exploded in the World Trade Center’s underground parking garage, killing six people and injuring more than a thousand. The artist and sculptor’s studio at the time was in Tribeca, just off Varick Street, and when the bomb went off, it was felt, both literally and figuratively, across downtown New York City. It would become a traumatic precursor to the even more harrowing events to come, less than a decade later, on September 11, 2001.