Airman Karen A. Bush, daughter of Mr. and Mrs. Leonard B. Bush, R. R. 51, Terre Haute, has been assigned to Sheppard AFB Tex., after completing Air Force basic training.During her six months at the Air Training Command’s Lackland AFB, Tex., she studied the Air Force mission, organization and customs and received special instruction in human relations.The airman has been assigned to the Technical Training Center at Sheppard for specialized traioing os a medical service specialist.Airman Bush is a 1972 graduate of Terre Haute North Vigo high school.