Mental health is a security concern because it influences how a person perceives the world, makes decisions and manages stress. The fact that an individual has had, or continues to have, an emotional, mental or psychological condition does not, by itself, preclude granting access to classified information. The issue is whether the individual’s condition causes,…

Executive Order 12564, dated September 15, 1986, establishes the U.S. Government as a drug-free workplace. It declares that “persons who use illegal drugs are not suitable for federal employment.” Applicants cannot be held to a no-prior-use standard, but any illegal drug use at all by a current U.S. Government employee or member of the military…

Some alcohol use is normal, but excessive use can be a serious security concern. Alcohol affects the central nervous system and how the brain functions. Excessive use affects perception, thinking and coordination. It impairs judgment, reduces inhibitions, and increases any tendency toward aggression. Those who abuse alcohol are more likely than others to engage in…