Brief Behavioral Treatment for Insomnia in Veterans With Posttraumatic Stress Disorder

Inclusion Criteria: * Individuals between the ages of 18-75 years who served in the military * Veterans who meet DSM-5 Criteria for Insomnia Disorder. * Veterans who meet DSM-5 Criteria for current PTSD * If currently taking insomnia, PTSD or other psychotropic medications, must be stable on these medications for at least one month and not make any changes to medications during the active treatment phase of the study. * If currently receiving any type of psychotherapy, must have received this treatment for at least one month and do not plan to discontinue treatment during the BBTI trial. Individuals planning to start a new type of psychotherapy will be required to wait one month prior to study enrollment. Individuals currently engaged or planning to engage in evidence-based treatments that are recognized by the VA as directly targeting insomnia or PTSD (i.e., Cognitive Behavioral Therapy for Insomnia, Cognitive Processing Therapy, or Prolonged Exposure Therapy) must complete treatment and wait one month prior to screening for the trial. * The investigators will not exclude individuals with TBI, given that prior studies have found that individuals with mild to severe TBI can benefit from behavioral interventions for insomnia. * The investigators will not exclude individuals with chronic pain, given that prior studies have found that these individuals can benefit from behavioral interventions for insomnia. * The investigators will not exclude individuals with treated sleep apn…