This bill, titled the Lifeline for First Responders Act , establishes a new grant program to address the mental health and well-being of emergency medical services (EMS) and first responders. The program will be administered by the Secretary of Transportation through the National Highway Traffic Safety Administration's Office of Emergency Medical Services, specifically targeting first responder mental health, stress reduction, family services, and suicide prevention. Eligible entities for these grants include federal, state, tribal, and local fire services that provide EMS, as well as EMS agencies and dispatch centers. Grant funds can be utilized for a range of services, such as evidence-based stress reduction, suicide prevention, confidential counseling, peer support, and crucial family support services for spouses and children. The bill also supports outreach, stigma reduction, education, training, and technical assistance related to wellness. To fund these vital initiatives, the bill authorizes an appropriation of $7,500,000 annually for fiscal years 2028 through 2032.