Sergei L. Loiko / Los Angeles Times
Kaloyev was working in Spain in the summer of 2002 when his wife, Svetlana, 10-year-old son, Konstantin, and daughter, Diana, 4, set out to join him on a vacation. Peter Nielsen was manning two workstations at once and by the time he realized the plane carrying the family was on a collision course, it was too late. The passenger plane collided with a cargo plane, killing all 71 people aboard both vessels.
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