Sam was a firefighter, and lately he was thinking about what a great ride it has been to put off fire and save so many people and animals. Well, he saved people more than animals or pets. But, it did not matter to him who he is saving, as long as they were in good hands and being taken care of was good for him.
Being a firefighter is very difficult because they have to act quick otherwise they lose their chance and the fire progresses. They need to deal with people who are frightened of the fire, and they get to see people whose skin is burned, which is not a good scene to watch.
Despite all of these, Sam liked what he did for a living because saving people was sweat. It was the best feeling in the world.