A housing complex that is well-known for criminal activity is reported to be the scene of an assault. The victim has been stabbed several times in the abdomen and needs emergency medical attention. The dispatcher informs Marco, who is the emergency medical responder, that witnesses are not sure who the perpetrator is and whether he has left the area. They believe several residents present were involved in the altercation. The victim is a known drug user and gang member who has been incarcerated before. What possible risks does Marco face in going into this situation? What legal responsibilities does he have?