Complex sentence: Wilkos was born in Chicago, Illinois, the son of Jeanette (née Pelikan), a beauty school instructor, and Stanley Wilkos, a former police officer and Marine who saw action in the Korean War.
Split into simpler sentences: Wilkos was born in Chicago, Illinois, the son of Jeanette (née Pelikan), a beauty school instructor, and Stanley Wilkos, a policeman. His father is a former police officer and Marine who saw action in the Korean War.