[Code of Federal Regulations] [Title 32, Volume 2] [Revised as of July 1, 2008] From the U.S. Government Printing Office via GPO Access [CITE: 32CFR228.9] [Page 452] TITLE 32--NATIONAL DEFENSE CHAPTER I--OFFICE OF THE SECRETARY OF DEFENSE (CONTINUED) PART 228_SECURITY PROTECTIVE FORCE--Table of Contents Sec. 228.9 Prohibition on narcotics and illegal substances. Entering or being on protected property under the influence of, or while using or possessing, any narcotic drug, hallucinogen, marijuana, barbiturate or amphetamine is prohibited. Operation of a motor vehicle entering or while on protected property by a person under the influence of narcotic drugs, hallucinogens, marijuana, barbiturates or amphetamines is also prohibited. These prohibitions shall not apply in cases where the drug is being used as prescribed for a patient by a licensed physician.