When providing basic first aid, one must assess the situation for hazards, minimize risk to the casualty and oneself, and check the casualty's vital signs and condition. This involves implementing DRABC (Danger, Response, Airway, Breathing, Circulation) to determine if the casualty is conscious, breathing, and has a pulse. Based on the assessment, appropriate first aid techniques must then be applied, such as CPR, bleeding control, splinting or treating for shock. The casualty's condition must be continuously monitored and professional medical help obtained.