Quotation marks would only have to be used on thoughts if the<br />thoughts were someone else's. If the thoughts came from a book, computer source, or some other source, then quotation marks should be used. However, the writer of the essay does not have to quote his or her <i>own</i> thoughts.
As of 2011, there are at least 25,000 sworn (and armed) law enforcement officers working for federal agencies not traditionally associated with law enforcement, and 3,800 of them were specifically criminal investigators.
Local. The most common and visible law enforcement officials are the municipal police officers representing cities, villages and townships. The main difference between these officers and those at the state or federal level is they are the initial enforcement front for all criminal laws.