Remembering 9/11: Trademark on the tower
For 25 years, we've paid somber tribute to the victims of 9/11. That includes broadcast engineers Isaias Rivera and Robert Pattison, two members of our CBS News New York family. They were at work on the 110th floor of the north tower, where the antenna and transmission mast kept New York television stations on the air. A total of six engineers who were up there died that day. CBS News New York's Dick Brennan reports.