alleviate the offender of their exclusive responsibility. In Eric Hickey's Serial Murderers and their Victims, a major analysis of 329 serial killers in America is conducted. As part of Hickey's analysis, he categorized victims as high, low, or mixed regarding the victim's facilitation of the murder. Categorization was based upon lifestyle risk (example, amount of time spent interacting with strangers), type of employment, and their location at the time of the killing (example, bar, home or place of business). Hickey found that 13–15% of victims had high facilitation, 60–64% of victims had low facilitation and 23–25% of victims had a combination of high and low facilitation. Hickey also noted that among serial killer victims after 1975, one in five victims were at greater risk from hitchhiking, working as a prostitute, or involving themselves in situations in which they often came into contact with strangers. There is importance in studying and understanding victim facilitation as well as continuing to research it as a sub-topic of victimization. For instance, a study of victim facilitation increases public awareness, leads to more research on victim-offender relationship, and advances theoretical etiologies of violent crime. One of the ultimate purposes of this type of knowledge is to inform the public and increase awareness so fewer people become victims. Another goal of studying victim facilitation, as stated by Maurice Godwin, is to aid in investigations. Godwin discusses the theory of victim social networks as a concept in which one looks at the areas of highest risk for victimization from a serial killer. This can be connected to victim facilitation because the victim social networks are the locations in which the victim is most vulnerable to the serial killer. Using this process, investigators can create a profile of places where the serial killer and victim both frequent. Victimization rate in United States The National Crime Victimization Survey (NCVS) is a tool to measure the existence of actual, rather than reported, crimes—the victimization rate. The National Crime Victimization Survey is the United States' "primary source of information on crime victimization. Each year, data is obtained from a nationally representative sample of 77,200 households comprising nearly 134,000 persons on the frequency, characteristics and consequences of criminal victimization in the United States. This survey enables the (government) to estimate the likelihood of victimization for rape, sexual assault, robbery, assault, theft, household burglary, and motor vehicle theft for the population as a