Sept 11 Fri

Stanley Praimnath and Brian Clark were at work when United Airlines Flight 175 crashed into the South Tower. They did something no one in the North Tower could do: get out alive, despite working on floors at or higher than where the plane struck their building. NBC Nightly News' anchor Tom Llamas reports. The resilience and patriotism amid a backdrop of destruction told the story of the shocking day in a single image. NBC News' Stephanie Gosk reports. A newly declassified presidential intelligence briefing shows the CIA warned former President Clinton in 1998 that Al Qaeda might use a plane in an attack on an American city. However, the warnings did not include specific information about when or how the attacks might take place. NBC News' Gabe Gutierrez reports. NBC News' Tom Llamas talks about the need to remember the lessons of 9/11 as well as to teach the generation of Americans born after that day.