David Barkway of Toronto was traveling in New York on business with his pregnant wife and was on the 105th floor of the World Trade Center when American Airlines Flight 11 hit. He has not been heard from since, said his father, Rev. Peter Barkway of Cornwall, Ontario.
His wife, who is expecting the couple's second child, was not at the World Trade Center.
"He was loving it, looking forward to being a dad again," Peter Barkway said from his home in Canada.
Barkway, 34, is employed by BMO Nesbitt Burns of Toronto, an investment firm.