One of the documents Erik found at the National Archives and posted to the 9/11 Document Archive contains additional information about the failure to find alleged Pentagon hijackers Khalid Almihdhar and Nawaf Alhazmi. The document, a memo of a 9/11 Commission interview of former FBI General Counsel Larry Parkinson drafted by commission staffer Barbara Grewe, concerns a consultation on August 28, 2001 between Dina Corsi, an FBI headquarters agent, and Sherry Sabol, an attorney at the FBI’s National Security Law Unit.