Accidents happen. Someone chokes on an ice cube or gets stung by a bee. It is important to know when to call 9-1-1 -- it is for life-threatening emergencies. While waiting for help to arrive, you may be able to save someone's life. Cardiopulmonary resuscitation ( CPR ) is for people whose hearts or breathing has stopped and the Heimlich maneuver is for people who are choking. CPR should only be done if you have had the training. You can also learn to handle common injuries and wounds . Cuts and scrapes, for example, should be rinsed with cool water. To stop bleeding, apply firm but gentle pressure, using gauze. If blood soaks through, add more gauze, keeping the first layer in place. Continue to apply pressure. It is important to have a first aid kit available. Keep one at home and one in your car. It should include a first-aid guide. Read the guide to learn how to use the items, so you are ready in case an emergency happens.