When Torres orders a non-alcoholic drink the bartender says "friend of Bill, huh?" and Torres replies "yeah, I just met him". Torres and the bartender are referring to AA (Alcoholics Anonymous), until recently Torres struggled with alcoholism until he began attending AA meetings. AA was founded in 1938 by Dr. Robert Smith, who went by Dr. Bob in AA meetings, and William Wilson, who went by Bill W, hence the reason why AA members would ask others if "they are a friend of Bill".
Dr. Bob was a surgeon specializing in colorectal surgery, he developed a drinking problem during medical school and suffered from it for 17 years, after realizing his drinking was ruining his marriage and career he began working on a medically based theory for how addiction worked and how to treat it. Bill W. was a National Guard solider who served during the Mexican Expedition of 1916 and later in World War I, Bill first began drinking during basic training to help him overcome his social anxiety, then later began drinking heavily in an attempt to cope with the things he saw and did during the war. Bill made several unsuccessful attempts to stop drinking, it wasn't until he was committed to an institution and told that his drinking would kill him that he turned his life around. Bill claimed to have a religious experience while going through a severe case of alcohol withdrawal (Delirium Tremens or the DT's), he said that he almost died and saw Jesus and made a promise that if he lived through the night he could become a Christian and never drink again. He held true to his word and never drank again and began forming a faith based program for remaining sober. In 1935 Dr. Bob and Bill met at a Lutheran Church meeting for recovering addicts and began discussing their ideas behind addiction and sobriety, they co-authored a book together called "Alcoholics Anonymous" which combined Dr. Bob's ideas that addiction is a medical condition and needs to be treated as such and Bill's belief that an addict needs to believe in a higher power and have the support of fellow like-minded people in order to stay sober. This book had the 12 steps that became the core tenants of AA and also detailed the struggles of the 100 people that made up the first AA group, it became a huge success and led to the formation of AA groups across the nation.