Rachel Nowlin and Roger Cason Nowlin - Cason Rachel Nowlin of Elk City, Okla. and Roger Cason of Oklahoma City, are pleased to an nounce their engagement. The bride-to-be is the daughter of Robert and Lisa Nowlin. She is a stu dent at Oklahoma State University. The prospective groom is the son of Len and Donna Cason. He is a student at the University of Oklahoma College of Medicine. The couple will exchange vows June 15, 2013 at St. Luke's United Methodist Church in Okla homa City.