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.
State and Local Law Enforcement Agencies. There are more than 17,000 state and local law enforcement agencies in the United States, ranging in size from one officer to more than 30,000. Many of these are municipal police departments operated by local governments, but there are actually several types of law enforcement agencies. Local Police includes municipal, county, tribal, and regional police that derive authority from the local governing body that created it.