 They are trained in the full spectrum of criminal investigation matters, including forensic topics such as crime scene processing, interview/interrogation, crime scene photography, and surveillance, among others.The Investigators routinely receive specialized and the most up-to-date forensic and interview/interrogation training, usually conducted at the Federal Law Enforcement Training Centers (FLETC) and from military, state, and local courses.PPD Criminal Investigators are responsible for investigating violations of Title 18 United States Code, Title 21 United States Code as it pertains to Drug Enforcement, Code of Federal Regulations 32, Section 40b as it pertains to conduct on the Pentagon reservation, and Code of Federal Regulations 41 as it pertains to conduct in locations under the purview of the Department of Defense.