Military Drug and Alcohol Policy - COMDTINST M100 0.10A
1. Alcohol Incident (AI).
a. Except as set forth in Paragraph 7.A.1.c. below, any behavior, in which the CO/OIC determines by a preponderance of evidence after considering the relevant facts(i.e., police reports, eyewitness statements, and member’s statement if provided) that alcohol was a significant or causative factor that resulted in the member’s loss of ability to perform assigned duties or is a violation of the UCMJ, Federal, State, or local laws. The military member need not be found guilty at court-martial, in civilian court, or be awarded non-judicial punishment for a behavior to be considered an alcohol incident.
b. Except as set forth in Paragraph 7.A.1.c. below, the military member must actually consume alcohol for an alcohol incident to have occurred. Simply being present where alcohol is consumed does not constitute an AI.
c. Any military member who provides alcohol to an underage military member must be awarded an AI, regardless of whether the alcohol is actually consumed by any member.
d. The following events must all be considered an Alcohol Incident:
(1) Underage Drinking. Any of the following events represent an underage drinking event and thus an AI.
(a) Active Duty Not on Approved Leave and Reservists on Duty. The Coast Guard minimum drinking age is 21 for all military members, wherever located; this is established as a Lawful General Order. Failing to comply with this order is punishable under Article 92 and other appropriate Articles of the UCMJ.
(b) Active Duty on Leave and Reservists Not on Duty. While on authorized leave, Coast Guard members must comply with the minimum legal drinking age for the jurisdiction in which they are present or the policy contained in Enclosure (9) of Coast Guard Morale, Well-Being, and Recreation Manual, COMDTINST M1710.13 (series). In the absence of any local law, the minimum drinking age is 21 for all military members.
2) Impairment While on Duty. All military members must be free from the residual effects of alcohol consumption and required to be free from all alcohol effects when reporting for duty, commencing duties, and/or expiration of liberty. Research shows impairment can occur in BAC as low as 0.02% but is significant at BAC of 0.04%.