Veterans who live more than 30 miles from Veterans Affairs (VA) PTSD specialty services will be offered participation in this study. All veterans receive 6 weeks of individual CBT-I for trauma-related insomnia. Participants will be randomized to one of two treatment conditions: (1) CBT-I in person or (2) CBT-I via telemedicine (defined as receiving treatment by telephone). No changes will be made to the CBT-I, other than mode of delivery, for the telemedicine group.