Who is a hero for you?

Hero for me it is a identily, which  saves people life. My story about real people such as doctors, lifeguards, policemen, firefighters. Thanks to these brave heroes, many people got a second chance at life. This heroes deserve respect among the public. Also want say about heroes-scientist , which open world new technology, new medication, they trying to improve the lives of people around. This story is about two types of heroes for me, these people are very important to the world.