This webpage from the Department of Homeland Security's Blue Campaign contains various training aids on human trafficking for individuals, first responders, law enforcement, federal employees, and educators."Human trafficking is a hidden crime, and the first step to combating it is to identify victims so they can be rescued and help bring their perpetrators to justice. The Blue Campaign has developed awareness and training materials to help increase awareness and educate on the indicators of human trafficking."
U.S. Dept. of Homeland Security: http://www.dhs.gov/