|In recent years, a tremendous amount of information has become available to law enforcement and corrections agencies that could be helpful in managing resources and solving crimes. Information technology (IT) can be applied to connect law enforcement and corrections agencies to one another, thus enabling them to share information. IT can sort, collate, and relate data—in some cases graphically—to assist police and corrections officers in managing scarce resources or in directly helping them to solve crimes. The technologies reviewed in this section include those designed to improve the communications interoperability of law enforcement and corrections jurisdictions so that, when necessary, they can easily work cooperatively (chapter 12); provide data to a computer so that images can be created or compared with other images in a database to help identify individuals (chapter 13); recover and/or enhance data captured on videotape or sound recordings (chapter 14); understand crime trends by mapping data about crimes (chapter 15); and develop guidelines and procedures to detect and solve electronic crimes (chapter 16). Although focused on law enforcement and corrections, efforts in this area are undertaken with the understanding that ensuring public safety in critical incidents requires a multidisciplinary response. Law enforcement and corrections must be able to effectively communicate and ex change information with other public safety disciplines (e.g., fire, HAZMAT, and emergency medical services).