CAPTION; EXPORTED.; Rescue personnel and firefighter sit in rubble of World Trade Center after it collapsed when the twin towers were hit by planes in a terrorist attack. This is Firefighter Kevin Shea on ground with Firefighter Ritchie Nogan of Ladder 113. Shea was only survivor of Ladder 35. With them are Paramedics Steve Zakheim and Al Kim, both of Metro Care Ambulance. Police Officer is unidentified as yet. firefighter ground zero. TODD MAISEL/NEW YORK DAILY NEWS