In a telephone interview on Saturday, Mr. Hammad's father, Peter Hansen, said his son was a plumber, and he provided a letter he said he had obtained from his son's employer attesting to his work at the trade center. In the letter, dated Feb. 13, Sergei Denko, president of Denko Mechanical, said Mr. Hammad had been working for his company in the basement garage area of 1 World Trade Center.
"He was there for a couple of days," Mr. Denko said in an interview.
Mr. Hansen, 56, said he immigrated to the United States 15 years ago. He said he was not in frequent contact with his son, who was born in Jordan, but he said it was inconceivable that his son was involved in any terrorist activity.
wonder if anybody axed mr. denko exactly what his crew was doing in WTC?