'Were you there that day?' Inside Cantor Fitzgerald's 25-year odyssey of loss and resilience after 9/11

The trading floor of Cantor Fitzgerald before the 9/11 attacks that killed 658 employees. Courtesy Cantor Fitzgerald Relief Fund It's been 25 years since the 9/11 attacks, when 658 Cantor Fitzgerald employees were killed. Caroline Aiken Koster joined the firm the following year as it grieved and…