Hazard prevention refers to the prevention of risks in an emergency. The first and most effective stage of hazard prevention is the elimination of hazards. If this takes to0 long, is too costly, or is otherwise impractical, the second stage is mitigation. Prevention involves measures or activities undertaken before a loss occurs, in an attempt to prevent the loss-causing event from happening, or to render its impact less significant. Examples of preventive measures are the creation and implementation of sound policies that provide appropriate guidance to line level officers, continuous and on-going m-service training, patrol cars equipped with prisoner screens, and the issuance of latex gloves for the prevention of infection. The primary objective of loss prevention is to reduce the frequency with which the loss causing event occurs.