David Rohde, writing for The New York Times News Service, reported on November 17, 2001, that in addition to nuclear plans, safe houses contained flight simulator programs, documents about the handling of biological and chemical weapons, and information about flight training schools in Florida.
[3] CNN claimed to have found and gone through the Kabul safe house used by Abu Khabbab, who they described as "Osama bin Laden's top chemical and biological weapons commander.
"[4][5] CNN hired the Institute for Science and International Security to examine the documents they found, and its president, David Albright, confirmed the abandoned documents included plans for a nuclear bomb, and extensive training notes on the handling of radiological material.
[24] Some Guantanamo captives faced the allegation that they stayed in Afghan guest houses that were not explicitly tied to terrorism.
"A Federal Bureau of Investigation source stated he met the detainee in July–August 2001 at the al Qaida guest house in Kabul, Afghanistan.