Nyorai kupfuurira kweiyi ndima - Zebley akanga ari mumiririri chaiye weFBI achishanda nokuda kweDhipatimendi reAnti-ugandanga rehofisi kwemakore manomwe. Somumiririri weFBI, Zebley akaongorora kuputika kwebhomba kwakaitwa neAl-Qaeda pamahofisi eU.S. muEast Africa
muna 1998, uye pashure pokurwiswa kwaSeptember 11 akapiwa basa kuchikwata chePENTTBOM cheFBI, icho chakatsvakurudza magandanga akanga ane mutoro wokurwiswa kwacho. Zebley aiva muchikwata chaisunga mumwe wevaputi vemabhomba emumiriri, Khalfan Khamis Mohamed, muna October 1999 muCape Town, kuSouth Africa. Zebley akanga ari mumwe wevaongorori vakavaka nyaya yaZacarias Moussaoui, uyo pakupedzisira akatongerwa kugara mujeri kweupenyu hwose. Zebley akanga ari chapupu chakapfupikiswa mumutongo waMoussaoui, achipupurira nzira idzo kureurura kwaMoussaoui muna 2005 kungadai kwakabatsira kutsvaga kupambwa kwaSeptember 11 mumwedzi pamberi pekurwiswa kwaakanga apa ruzivo rwechokwadi paakatanga kusungwa.