Video of WTC 2nd tower collapsing

1. Wide of top of second World Trade Centre tower as it starts to collapse 2. Cloud of smoke billowing down street from collapsing tower, pan round and back to approaching cloud of smoke coming down street, camera is engulfed in smoke 3. Interior building cameraman takes shelter inside building with others, smoke 4. Wide of street covered in debris and smoke, emergency workers pan up to surrounding buildings and back down to street 5. Mid shot fire crew members emerging from smoke of collapsing tower