There are many conspiracy theories that attribute the planning and execution of the September 11 2001. Another prominent thought is that the Pentagon was hit by a missile. Albert "Bert" N. Stubblebine III is a retired Major General in the United States Army. He was the commanding general of the United States Army Intelligence and Security Command from 1981 to 1984, when he retired from the Army. He is also known for his interest in parapsychology. Stubblebine graduated from the United States Military Academy and received a master's degree in chemical engineering from Columbia University. His active duty career spanned 32 years, and he is credited with redesigning the U.S. Army intelligence architecture during his command of the United States Army Intelligence and Security Command from 1981 to 1984. Other U.S. Army commands that he led included the Electronic Research and Development Command (ERADCOM) and the Intelligence and Security Command (INSCOM). Stubblebine was a key person in the U.S. military invasion of Grenada and was, according to a report published by the Daily Mail, "at the heart of America's military machine". He is a member of the Military Intelligence Hall of Fame. Stubblebine appeared in the 2006 documentary "One Nation Under Siege" in which he states, in relation to the attack on The Pentagon which took place on September 11, 2001: I look at the hole in The Pentagon, and I look at the size of an airplane that was supposed to have hit the Pentagon, and I said "The plane does not fit in that hole. So what did hit the Pentagon?" Thought over beLIEf.