The 1-hour booster intervention was delivered using MI to extend the effective elements found in the original BAI intervention with elements from behavioral economic theory. A behavioral economic approach to alcohol use suggests that decisions to drink are more likely when 1) there is a lack of access to or engagement in alternative alcohol-free reinforcing activities, and 2) there is a greater relative focus on immediate, relative to delayed, rewards (i.e., steep delayed reward discounting). The intent of the intervention is to bring important long-term goals into the present so that the immediate awareness of this goal might diminish the relative benefit of drinking. Another goal was to have the Airmen identify enjoyable and goal-consistent alcohol-free activities they could engage in during their free time. The booster also included a reminder of the U.S. Air Forces rules and policies on alcohol use and harm reduction drinking strategies.

The 1-hour Bystander intervention was a non-alcohol related briefing that served as the control condition. The intervention focused on increasing Airmen's awareness of the qualities of being a good "wingman" (e.g., watching for their peers) and how those are tied to the Air Force Core Values. It aimed to increase participants' perceived responsibility to act in certain situations. The intervention draws on the philosophy that members in a community have a role in shifting social norms to prevent violence. While the intervention did not directly discuss alcohol use, the focus on military values and taking responsibility for one's self and others could contribute to healthier drinking-related choices.

The BAI contained components of effective interventions developed for young adult drinkers both in health care and educational settings and was specifically tailored to the unique needs and risk factors of Airmen. The 1-hour group intervention was administered using the principles of motivational interviewing (MI) in an interactive Socratic style to generate feedback and discussion. Open-ended questions, reflections, as well as the decisional balance scale were used to increase Airmen's motivation to remain alcohol free.

Adjudicated alcohol related incident in the United States Air Force (Article 15). We determined if an Airmen had received an Article 15 in the year following Technical Training by searching the Automated Military Justice Analysis and Management System (AMJAMS).