Lana Iwanus and Mark RochaI wan us - RochaLana Iwanus of Crete and Mark Rocha of South Chicago Heights have announced their engagement.Iwanus. the daughter of MaryIwanus of Crete, is a 1983 graduate of Crete-Monee high school and a 1988 graduate of Bradley university with a degree in nursing.Rocha, the son of Sue Flaig of South Chicago Heights, was graduated in 1978 from Bloom high school, and is employed by Century Steel in Chicago Heights.The couple is planning a June. 1989, wedding.