You are walking down the street when a young boy collapses in front of you. You come to his aid and discover that he is not breathing and shows no...

You are walking down the street when a young boy collapses in front of you. You come to his aid and discover that he is not breathing and shows no signs of life or pulse. After having a bystander call 9-1-1 or the local emergency number, you begin CPR. After about 3 minutes, suddenly the boy starts coughing. What should you do?