Specifically, the driving exercises will embed a test-intervene-test session plan within a structured hierarchy of four progressively more challenging civilian driving tasks administered on successive weeks. Participants will drive local roads and highways familiar to Veterans Affairs - Palo Alto Health Care System Certified Driving Rehabilitation Specialists (CDRS). These courses have known characteristics as regards civilian driving challenges and OEF/OIF-relevant "trigger" stimuli. Graduation from one course to the next will take place only with permission from the CDRS who has accompanied the participant on the prior exercise. Based upon their self-reports of driving-related distress, we expect such distress to arise during the driving exercises. At such times, participants will be instructed to park in the next available safe parking location. They will be induced to rapidly achieve reduced autonomic arousal through use of a graphics-rich biofeedback procedure and simultaneously engage in the generation and rehearsal of cognitive reappraisal scripts under the coaching of project therapist also in the vehicle. These individualized procedures are expected to quickly lower emotional reactivity to subjectively adverse driving events and conditions. The participant will then drive the course a second time. Each session will finish with a graphical comparison of pre- and post-intervention vehicle and control surface movement parameters, visual attentional control, autonomic arousal and subjective driving distress.