U.S. Department of Transportation, Office of Drug and Alcohol Policy and Compliance, DOT COVID-19 Drug & Alcohol Testing Statement of Enforcement Discretion for Substance Abuse Professionals and Service Agents (Apr. 4, 2020; updated June 17, 2020; Sept. 22, 2020; Dec. 9, 2020; and May 27, 2021) (Ex. AGY-AVIATION-SURFACE-046)
