Yesterday, I spoke with Brigadier General Larry Dudney (Ret.). He was in the Pentagon on September 11, 2001, watching the television news of planes hitting the World Trade Center. He went to answer the phone and a friend on the other side of the Pentagon told him it had to be a terrorist attack. About that time, the walls caved in around him. This is my conversation with him.
From Inside the Pentagon on 9/11 - Brigadier General Lawrence Dudney