For information about the orgsanization, see Alcoholics Anonymous in the Wikipedia.

Alcoholics Anonymous (AA) is a worldwide organization the helps those who are alcohol-dependent cope with their problem. Characters who are affiliated with AA are:

• Aaron Stark, who often leads meetings.
• Mark Benford

Aaron was Mark's sobriety sponsor until Mark suggested that Aaron was a candidate for the unknown person who told Olivia that Mark had been drinking during his Flash. ("Gimme Some Truth") ("Believe")