Here's one specially for Sparteye:
NPR had a segment this evening on a book about a "woods cop", i.e., a conservation officer, who has a territory in the U.P. of Michigan. The author of the book was being interviewed and noted that the woods cop "is known to have a problem with authority -- he tends to be a lone shark".
(I guess that's the spelling to use; he certainly didn't mean "loan shark". Maybe he dances with sharks.)