Patrick Francis Labyorteaux (born July 22, 1965) is an American actor. He is best known for his roles of Andrew "Andy" Garvey on the NBC series Little House on the Prairie as well as Bud Roberts on the CBS series JAG and NCIS. He is the brother of actor Matthew Labyorteaux, who also appeared as a child actor on Little House on the Prairie as Albert Ingalls.