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.
Federal law enforcement in the United States. U.S. Customs and Border Protection officers board a ship. The federal government of the United States empowers a wide range of law enforcement agencies to maintain law and public order related to matters affecting the country as a whole.