A Transdiagnostic Sleep Health Intervention for Veterans With PTSD

Inclusion Criteria: * U.S. Military Veteran aged 18 and above engaged in VA primary and/or mental health care * CAPS 5 PTSD diagnosis; or CAPS 5 score \>=25 in the absence of full criteria * SCID Insomnia Disorder diagnosis, supported by ISI score \>=10 * CAPS-IV nightmare score \>=4 * Sleep-related functional impairment based on a WHODAS score \>=32 * Willingness to engage in 8-12 sessions of treatment to address their sleep disturbance Exclusion Criteria: * Current cognitive problems, active psychosis or mania, or other mental/cognitive conditions such as moderate to severe neurodegenerative disease that would render the participant unable to connect to videoconferencing platform, engage in remote psychotherapy, or communicate using the required VA secure email platform * No access to reliable internet service connected to a computer, iPad or similar device (telephone not adequate) * Inability or unwillingness to use a VA-approved videoconferencing platform and VA secure email; * Current engagement in a sleep-focused psychotherapy, or plan to start a sleep-focused psychotherapy in the next 3 months. Sleep-focused psychotherapies include, but are not limited to, CBT-I, BBT-I, and IRT