1st Step:  Shake and Shout

The first step is to make sure that the victim is ok. This is called the shake and shout method. Approach the victim and shake them and ask if they are ok. If you get no response, call your local EMS or call 911 before you go any further.
 
 
 

2nd Step: Open the Airway
 

After you have called 911, you must make sure the persons airway is clear. If they are on there stomach turn the victim over on their back. The most common object that covers the airway is the tongue. To clear the airway, you must tilt the head back by pressing down on the head and lifting up on the chin. This will cause the tongue to fall back into place and out of the throat.