When was the science for presumptive drug testing developed? What were the recommendations of the scientists at the time of development? Has the science related to presumptive drug testing changed significantly since its original development? Explain the difference between presumptive and confirmatory tests specifically related to the testing of drugs. What county led the nation in exonerations in 2015? What types of cases comprise the bulk of these exonerations? Do you think the CSI Effect may have an impact on how defendants choose to plea in cases involving presumptive tests? Explain your stance. Contact a police department of your choosing. Inquire about the current policy of that agency regarding presumptive testing in the field. Cite the person you speak with as a source on your paper. Factoring in all the information you have learned on presumptive testing, tell me your opinion. If you were the head of a law enforcement agency, what would your policy be on testing? Do you have other ideas that you would implement?