Study Relevance: Since family caregivers constitute the largest group of adult care providers in the United States and the market value of family caregiving exceeds that spent on formal health and nursing home care, the mental health and well-being of family caregivers of Veterans with TBI - and their subsequent ability to assist wounded Veterans at home (e.g., prevent institutionalization of injured/impaired Veterans) - is of paramount importance. If the PST-based intervention reduces burden levels and improves mental health aspects of QOL in military family caregivers, the data will be used to lay the foundation for offering PST- based mental health services for distressed family caregivers of Veterans with TBI through the VA Program of Comprehensive Assistance for Family Caregivers.