The video starts mid-way through as Keith B. Ezell, a nursing assistant, performs CPR on an unresponsive woman. He does not stop until paramedics arrive to relieve him. This is what CPR really looks like. He doesn't just save a life, he saves two.
Then he just walks off and goes to work, he said he was late already. Thank God there are still good people in this world like him, that man assisting and those who around offered support (but don't get in the way).