A first responder is a person who is among the first to arrive at the scene of an emergency. This can include professionals like paramedics, firefighters, and police officers, as well as trained volunteers. Their primary role is to provide immediate assistance, ensure safety, and stabilize individuals until further medical help arrives. First responders are trained to handle various emergencies, such as medical crises, fires, and natural disasters. They often undergo rigorous training to develop skills in first aid, CPR, and emergency response. Their quick actions can save lives and significantly impact the outcome of an emergency situation.