Dave Vera
(left)
, a telecommunications technician for Euro Brokers, cleared people from the 84th floor in the south tower, but would later send word by walkie-talkie that he needed help himself. His call was heard by his friend and colleague, Jose Marrero
(right)
, who had urged dozens of people to leave the 84th floor and had led them downstairs. He then headed back up to help Vera. (JANICE BROOKS/EURO BROKERS INC.; JERROLD BANKS/EURO BROKERS INC.)