Development of a Treatment Prognosis Calculator for the Prevention of Suicide

The goal of this interventional study is to develop and test a treatment prognosis calculator to identify which service members with suicidal ideation or behavior are likely to respond well to the current standard of care treatment and which should instead receive Brief Cognitive Behavioral Therapy (BCBT) as a first-line treatment. The main aims of the study are: * Aim 1: To develop a novel treatment prognostic calculator to predict response to treatment as usual (TAU) and identify treatment-seeking military personnel who are unlikely to respond adequately to TAU for the reduction of suicidal ideation. * Aim 2: To evaluate the performance of the treatment prognosis calculator in a new sample of treatment-seeking military personnel and determine whether BCBT is more effective than TAU for those patients who are predicted not to respond adequately to TAU. Participants will receive mental health treatment as it is typically administered by their mental healthcare treatment team. Members of their mental healthcare treatment team may receive intensive training in BCBT. After their provider has received this training, they may use this treatment as part of standard of care treatment. The timing of this training will be determined randomly. Participants will complete self-report assessments at the beginning of the study (baseline) as well as 3, 6, 9 and 12 months after their participant begins. These assessments will include questions about feelings, thoughts, moods, impulses, substance use, and behavior.