Hi, Everyone. I'm Robert. A few days ago, my grandparents took me to see a medical helicopter. I got to go inside it. We saw the oxygen tubes (氧气管) and heart monitor (心脏监视器). We also saw other things to keep patients alive while they fly them to the hospital. The doctors talked to us about saving lives. They fly very sick or badly injured people. They get them to a big hospital quickly to save their lives.