Riddle: If someone were to write a biography about us, the following could be reported: #1 - A golfer faces many of us when playing 18 holes. #2 - we are frequently served with fish. #3 - On T. V., from 1977 to 1983, we enforced the law --- but only in California. #4 - Some of us have ridges, but we are not associated with mountain ranges. #5 - Gamblers love getting their hands on us as often as possible. Based on the biographical information above --- Who/what are we?