Retired FBI Supervisory Special Agent (for 22 years), Clemente was a member of the National Center for the Analysis of Violent Crime (NCAVC) Behavioral Analysis Unit (BAU), an integral part of the Critical Incident Response Group, which provides behavioral support during all FBI crisis incidents. His first duty assignment was to the New York Field Division's Joint FBI/NYPD Sexual Exploitation of Children Task Force. He was then assigned to the Office of the Independent Counsel in Little Rock and the Washington Field Office in 1995. In 1998, he was promoted to SSA and assigned to the NCAVC. Since then, he has been qualified as an expert witness in the areas of child sex offender behavior, child sexual victimization, and child pornography. Prior to joining the FBI, Clemente headed the Child Sex Crimes Prosecution Team for the New York City Law Department. Clemente has analyzed hundreds of cases for and has provided investigative, prosecutive, and sentencing guidance to FBI agents, federal, state, and local law enforcement agencies, prosecutors, psychologists, social workers, and other professional organizations across the United States and overseas in cases involving sexual exploitation of children, child pornography, child sex abuse, child prostitution, child abduction, serial rape, incest, sexual assault, sexual homicide, serial homicide, kidnapping, and equivocal death.