Hansen 's notable work for '' Dateline '' includes coverage of the Columbine massacre , the Oklahoma City terrorist attack , the Unabomber and the TWA Flight 800 disaster ; as well as investigative reports on Indian child slave labor and on counterfeit prescription drug sales in China . Hansen was responsible for most of '' Dateline 's '' coverage of the September 11 attacks , as well as stories on terrorist groups and the operations of Al-Qaeda . He also exposed how a group linked to Osama Bin Laden had tried to buy missiles and nuclear weapons components , and he also worked on an exclusive report detailing an attempted 1994 terrorist attack in France . His series on the lack of security at airports resulted in the FAA opening an investigation and ultimately revising its policies
Oklahoma City terrorist attack
Oklahoma City bombing
Chris Hansen