Ziyad Cerrahsubmission regarding relevance of cockpit voice recorders" (PDF). United States district court for the eastern district of Virginia. 13 Eylül 2002. 31 Mayıs
11 Eylül saldırılarıtarihi: 24 Eylül 2021. ^ Virginia, United States District Court Eastern District of (8 Aralık 2020). Substitution for the Testimony of Khalid Sheikh Mohammed