Bernhard Goetz was an electrical engineer before he shot four teenagers on a New York subway, and now he's putting his talents to use in prison. Goetz, serving a one-year sentence for carrying an unlicensed gun, is working in the city Corrections Department's radio shop, repairing walkie-talkies and radios. Reports indicate Goetz is doing an excellent job. The pay, however, is not so good - 50 cents an hour.