"When former Secretary of Defense Donald Rumsfeld was asked about World Trade Center Building 7 (WTC 7), he claimed that he had never heard of it. The one major tenant of WTC 7 was Salomon Smith Barney (SSB), the company that occupied 37 of the 47 floors in WTC 7. A little discussed fact is that Rumsfeld was the chairman of the SSB advisory board and Dick Cheney was a board member as well. Rumsfeld had served as chairman of the SSB advisory board since its inception in 1999."