Threat assessment or protective intelligence is the process of gathering and assessing information about persons who may have the interest, motive, intention, and capability of mounting attacks against public officials and figures. Gauging the potential threat to and vulnerability of a targeted individual is key to preventing violence. Among criminal justice functions, threat assessment holds great promise for determining vulnerability and guiding interventions in potentially lethal situations. The primary goal of every protective intelligence investigation is to prevent an attack on a potential target. By using a combination of investigative skill, corroboration, and common sense, a protective intelligence investigator can gather the information and evidence to make a thoughtful assessment of the threat an individual may pose to a target. Once an assessment is made, a plan can be developed and implemented to monitor the individual and to intervene, as appropriate, to prevent an attack. Attention to the individual's motives and attack-related behaviors and to the systems (family, work, community, criminal justice, mental health, and social services) that the individual is involved with are key to assessing and managing a potential threat.