Inclusion Criteria:  ≥ 18 years of age Current hazardous drinking pattern (AUDIT scores ≥ 8 for males and ≥ 7 for females; this approach does not exclude persons with alcohol use disorder) Lifetime exposure to a DSM-5 Criterion A traumatic event and endorsing at least one symptom in each DSM-5 PTSD symptom cluster Elevated AS score (1 SD above normative mean) Fluent in English  Exclusion Criteria:  Concurrent alcohol or other substance use treatment Current/past bipolar or psychotic disorder Current imminent risk of suicidality (i.e., past month ideation with intent or plan) Current stable use of prescription opioids/ benzodiazepines/positive urine drug screen Current pregnancy Inability to provide verbal or written consent Breath analysis (Alco-Sensor FST) estimating blood alcohol concentration (BAC) above 0