milwaukee, despite having a spike in crime and homicides this year like baltimore did see a significant decline between 2005 and 2015. >> based on what though? what did the study do that reduces crime? unless the study reduces drugs, broken families, poor education and all that stuff, i don't get how a study helps. >> right. so, professor webster explained to me that this sort of program takes data out of homicide trends, tries to analyze what are the the driving factors, who are the common denominators in terms of the people involved in some of the worst crime. what circles they travel in. who knows who and how the connections are being made. so that law enforcement can target those individuals, et cetera. i mean, ms. mosby makes the point that she already knows that crime in baltimore is driven by drugs and gangs. and turf wars but the focus of the research is to put the pieces together. >> kevin, thank you.