Frank J. Doyle, 39; grew up in New Boston, Michigan. Frank worked in the south tower at the World Trade Center, and was head of equity trading for Keefe, Bruyette & Woods. Mr. Doyle was able to call his wife, Kimmy Chedel, twice during the attacks, and informed her that he needed to stay in the tower to help others. Mr. Doyle is survived by his wife, his son Garrett, and his daughter Zoe. He and his family lived in Englewood, N.J.

Profile published in THE NEW YORK TIMES on October 30, 2001

When Frank Doyle came home from his job on Wall Street, he would play with his two young children and get them to bed. Only then did Mr. Doyle pull on his running shoes, go outside and run hills in his Englewood, N.J., neighborhood to train for triathlons.

“He was a tremendous athlete,” said Kimmy Chedel, his wife of four years. The couple ran their first triathlon together on Aug. 5.

Ms. Chedel said she met Mr. Doyle on an evening cruise of New York Harbor for college alumni of his school, Bowdoin College in Maine, and her school, Middlebury College in Vermont. His name tag fell off and stuck to her shoe. “I said, “Who is Frank Doyle?’ ” she said. “He came over when he heard his name. It was love at first sight.”

Mr. Doyle, 39, who was head of equity trading at Keefe, Bruyette & Woods, called his wife after terrorists struck the World Trade Center’s north tower. “I have to stay,” he said. After the south tower, which contained Mr. Doyle’s office, was struck, he called her again, saying that he and many others were trapped. “He very calmly said, ‘We need your help,’ ” Ms. Chedel said. “Up to the last minute of his life, he was a team player.”