Investigators for the 9/11 Commission discover that the Federal Aviation Administration (FAA) has withheld a large amount of documents from it about the day of the attacks and falsely claimed it had provided everything the Commission asked for (see August 2003). The discovery is made on a day when the Commission’s investigators begin interviewing air traffic controllers at centers on the East Coast and in the Midwest. John Farmer, the staffer who leads the Commission’s team dealing with this aspect of its work, is only a few minutes into interviews at the FAA’s Indianapolis Center when he realizes, in the words of author Philip Shenon, “just how much evidence the FAA had held back.” His interviewees tell him that there is “extensive information the Commission has not seen, including tape recordings of conversations between the individual air traffic controllers and the hijacked planes.” He also discovers that what the FAA has provided is merely the “accident package,” rather than the much larger “accident file.” Farmer is “furious” and contacts the Commission’s lawyer in Washington. Asked to explain the situation, the FAA rapidly admits there is other material and, within days, several boxes of new material, including the air traffic control tapes, arrive at the Commission’s offices. [Shenon, 2008, pp. 201-202] However, the Commission has lost confidence in the FAA and will issue it with a subpoena next month (see October 14, 2003).