David Carter is Wayne and Lily's oldest child. As Ruth's only grandson, he is the "heir-apparent" to the Carter ranch, but though he's a capable ranch hand, he has dreams of doing something beyond raising cattle. An honor student throughout his school career, David has a strong affinity for the sciences and a love of all things that have to do with space. He is a light plane pilot, and has been licensed to fly since he was sixteen. He is named for his grandfather.