Rubuta ci gaba ga wannan sakin layi - A watan Yulin 1999, an sanya Jacoby a matsayin darektan leken asiri (J2) a kan Ofishin Jakadancin. Zamansa ya fara ne da jagorantar aikin leken asirin da aka koya don bincika ayyukan a cikin Balkans da Kosovo. Ayyuka na Arewa da Kudancin Kudancin sun ci gaba da aiwatar da Yankin Yankin Jirgin Sama da takunkumi a kan Iraki. Bugu da kari, jirgin saman leken asirin Amurka na EP-3 ya shiga hannun kasar Sin a tsibirin Hainan bayan karo da wani jirgin yaki na kasar Sin yayin gudanar da ayyukan a Tekun Kudancin China da kuma kai hari kan USS "Cole"
ya faru a Aden, Yemen. Wannan taron na ƙarshe ya haifar da canji mai mahimmanci a cikin tsarin bincike game da ta'addanci da tallafi ga dakarun aiki wanda aka gabatar a cikin shirin Joint Intelligence Task Force, Combating Terrorism (JITF-CT) wanda ke aiki a ƙarƙashin jagorancin Joint Staff J-2 a matsayin wani ɓangare na Hukumar Tsaro ta Tsaro. Jacoby yana ba da shawarar ƙara yawan kuɗi don JITF-CT a yammacin ranar 10 ga Satumba, 2001 tare da manyan ma'aikata a cikin Kwamitin Zaɓin Dindindin na Majalisar Wakilai. Yana cikin Pentagon lokacin da aka kai hari a ranar 11 ga Satumba, 2001. Ya jagoranci tsayawar JITF-CT, ya kasance mai aiki a cikin shirye-shiryen leken asiri don Yakin Duniya kan Ta'addanci da ayyukan soja a Afghanistan, ya kula da ayyukan J-2 a lokacin farkon ayyukan yaƙi a Afghanistan kuma ya taimaka sosai wajen haɓakawa da haɓaka manufar aiki da ake kira "2 Plus 7" wanda ya zama cibiyar cibiyar ayyukan Amurka don rushe kungiyar Al-Qaeda da kuma kai hari kan jagorancin shugabanci da ayyukan tsarawa. Kokarin ya mayar da hankali kan ayyukan da aka yi wa shugabannin biyu da manyan manyan masu tsara ayyukan bakwai. Sakamakon ya kasance mummunan lalacewar iyawar kungiyar. Jacoby ya kammala aikinsa na shekara guda a matsayin Babban Jami'in J-2 a watan Yulin 2002.