At completion of the PTSD therapy the patient will again be interviewed by a member of the research team. The post-therapy assessment will consist of the CAPS, the Time-line Follow-back, BAI, BDI-II, RTS, ASI, HSI, and a measure of treatment satisfaction (Client Satisfaction Questionnaire [CSQ-8]). The subject is again compensated $25 for the post-therapy assessment. At three months post completion, the subject participates in a follow-up interview. This interview will consist of the same measures used at the post-therapy assessment, with the exception of the CSQ-8 and with the addition of the trauma event checklist. The subject is again compensated $25 for their participation in the follow-up interview. All research activities, including all assessments and therapy sessions, will be conducted on-site at the addiction treatment program.