TRICARE is a health care program for U.S. military members, retirees, and their families. It provides comprehensive medical coverage, including hospital visits, preventive care, and mental health services. The program aims to ensure that eligible individuals have access to quality health care. There are different plans under TRICARE, such as TRICARE Prime, TRICARE Select, and TRICARE for Life, each designed to meet varying needs. Beneficiaries can choose their providers and receive care from military treatment facilities or civilian providers, depending on their plan.