As an example of terrorist planning cycles, the Khobar Towers attack shows the need for long-term FPCI. "The Hizballah operatives believed to have conducted this attack began intelligence collection and planning activities in 1993. They recognized American military personnel were billeted at Khobar Towers in the fall of 1994 and began surveillance of the facility, and continued to plan, in June 1995. In March 1996, Saudi Arabian border guards arrested a Hizballah member attempting plastic explosive into the country, leading to the arrest of two more Hizballah members. Hizballah leaders recruited replacements for those arrested, and continued planning for the attack."
