Anthony Shaffer (born 1962) is a former U.S. Army Reserve lieutenant colonel who became known for his claims about mishandled intelligence before the September 11 attacks, and for the censoring of his ghost written[1] book Operation Dark Heart.

In October 2003 Shaffer told the 9/11 Commission staff director, Philip D. Zelikow, that in 2000, a DIA data-mining program known as Able Danger had uncovered two of the three terrorist cells which the FBI determined committed 9/11.

[5] A Time magazine article dated August 14, 2005, reported that Weldon was no longer sure that Atta's name was on the chart created by Able Danger that he had handed to then-Deputy National Security Advisor Stephen Hadley in 2001, days after the 9/11 attacks.

[8] With the help of ghostwriter and researcher Jacqueline Salmon,[1] Shaffer published memoirs of his time as a reports officer in Afghanistan in book titled Operation Dark Heart.

The Defense Department bought and destroyed 10,000 copies of the book's first, uncensored run, before allowing the release of a second, censored printing with redactions on approximately 250 pages.