Work and family were David Berry's two consuming passions.
As research director at the brokerage firm of Keefe, Bruyette & Woods, Berry kept long hours. To cut down on commuting time, he lived with his wife and three young sons in Brooklyn Heights, across the East River from his World Trade Center office on the 89th floor of the south tower.
"He was quiet. He was very thoughtful," said colleague Peter Wirth, who described Berry as an "intellectually curious" man unafraid to take difficult positions.
Born and raised in Oklahoma, Berry, 43, attended Yale University and the London School of Economics. People in the office would tease the formal, well-spoken Berry, asking if he was really from Oklahoma.
Berry and his wife, a publishing house editor, had a weekend house in the Hamptons. Wirth often ran into them there and was inevitably startled at the sight of Berry relaxing, wearing casual garb.
Most of Berry's closest colleagues, those who worked alongside him in the research department, are also missing, Wirth said.