— Michael Zottoli and Patricia Mills of Arlington, Va. He had worked at a telecommunications firm. The couple raised a young son and toddler in their high-rise apartment.
— Richard and Cynthia Murphy of Montclair, N.J. He mostly stayed home with their two pre-teen children while she worked for a lower Manhattan-based accounting firm that offered tax advice.
— Heathfield and Tracey Lee Ann Foley of Cambridge, Mass. He worked in sales for an international management consulting firm and peddled strategic planning software to U.S. corporations. She was a real estate agent.
— Semenko of Arlington, Va., who spoke Russian, English, Spanish, Chinese and Portuguese. He worked at the Travel All Russia agency, where co-workers described him as "clumsy" and "quirky."