If you find an unresponsive adult victim with no evidence of injury what should you do?

If you find an unresponsive adult victim with no evidence of injury, first ensure the scene is safe before approaching. Check for responsiveness by gently shaking the person and calling out to them. If there is no response, call emergency services immediately and begin CPR if you are trained, ensuring to provide chest compressions and rescue breaths until help arrives. Monitor the victim's condition and be prepared to use an AED if available.