32 CFR 1903.12: Alcoholic beverages and controlled substance.
(a) Alcoholic beverages.
The possession, transportation of alcoholic beverages in closed containers and their consumption on an Agency installation will be administratively controlled by the Agency outside the provisions of this part.
(b) Controlled substances.
The following are prohibited on an Agency installation:
(1) The delivery of a controlled substance, except when distribution is made by a licensed physician or pharmacist in accordance with applicable Federal or State law, or as otherwise permitted by Federal or State law. For the purpose of this paragraph, delivery means the actual, attempt, or constructive transfer of a controlled substance.
(2) The possession of a controlled substance, unless such substance was obtained by the possessor directly from, or pursuant to a valid prescription or ordered by, a licensed physician or pharmacist, or as otherwise allowed by Federal or State law.