Control Policy. (4) The Administrator of the Drug Enforcement Administration. (5) The heads of such other government agencies and private sector entities as the Secretary considers appropriate. (c) Program elements To the extent the Secretary considers appropriate, the program required by subsection (a) may incorporate by reference, and rely on, any and all aspects of the Opioid Detection Challenge conducted by the Science and Technology Directorate of the Department of Homeland Security, U.S. Customs and Border Protection, the United States Postal Inspection Service, and the Office of National Drug Control Policy, including its findings and results. 6. 100 percent screening of illicit fentanyl and other illicit synthetic opioids in inbound international mail and express cargo from high-risk countries (a) In general Not later than 5 years after the date of the enactment of this Act, the Secretary shall implement an automated system to screen 100 percent of international mail and express cargo inbound into the United States from high-risk countries to detect, and prevent the importation into the United States of, illicit fentanyl and other illicit synthetic opioids. (b) Requirements In developing the system required by subsection (a), the Secretary shall— (1) develop an automated, nonintrusive method of detecting illicit fentanyl and other illicit synthetic opioids in international mail and express cargo inbound into the United States that does not unreasonably delay delivery of such mail and cargo