Employees must adhere to the regulations controlling conduct when they are on official duty or in or on Government property, including the Treasury Building, Treasury Annex Building and grounds; the Bureau of Engraving and Printing buildings and grounds; the United States Mint buildings and grounds; the grounds of the Federal Law Enforcement Training Center; and Treasury-occupied General Services Administration buildings and grounds (see 31 CFR parts 91, 407, 605, 700).