Requiring operators of certain libraries, beginning January 1, 2026, to place an automated external defibrillator in a prominent area accessible to employees and library users, provide maintenance for the automated external defibrillator, and ensure a trained individual is present during a library's open hours; granting certain immunities to libraries and individuals under certain circumstances; requiring the Maryland Institute for Emergency Medical Services Systems to make a certain report on the defibrillator program in libraries; etc.