根據九一一委員會嘅最終報告,劫機員最近買咗多功能手工具同埋各式各樣嘅 Leatherman-type-utility knives with locking blades, which weren't forbidden to passengers at the time, but weren't found among the possessions behind by the hijackers. Flight 11, Flight 17, Flight 175, and 93 passengers on the Flight had several hijackers aboard each plane; they used mace, tear gas, or pepper spray to overcome attendants; and some people on board had been stabbed. 報告指出劫機員刺傷並殺死飛行員,空乘員,同埋一個或多個乘客. 根據九一一委員會嘅最終報告,劫機員最近買咗多功能手工具同埋各式各樣嘅 Leatherman-type-utility knives with locking blades, which weren't forbidden to passengers at the time, but weren't found among the possessions behind by the hijackers. 一位乘客服務員喺11號機上,一個乘客喺17號機上,同埋其他
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