Substance Abuse Control Officer.  An SACO is usually a collateral duty billet; oversee all aspects of Marine Corps drug and alcohol prevention programs.

• Advise the CO on the administration of the unit drug and alcohol prevention program
• Conduct administrative screenings of individuals referred to the Substance Abuse Counseling Center (SACC) for possible alcohol and/or drug problems
• Coordinate and/or assist in alcohol and drug abuse awareness education, for example, during command orientation
• Establish and monitor a command prevention and intervention program
• Serve as the Aftercare coordinator for the command, and monitor Aftercare plans, where applicable, for members who return after completion of outpatient or inpatient alcohol treatment programs
• Act as an authorized command self-referral agent