I am in need of writing a letter to the highest person in charge of the Nassua County (in Long Island, NY)? -

I am in need of writing a letter to the highest person in charge of the Nassua County (in Long Island, NY) Police Department. I dont know his or her name and what to call the person. Please reply back to this Question with the following if you can.1. The first and last name of the person.2. What is more appropriate to put in the letter, Dear (first name) or Dear (last name) ?3. What are there ranked name (leuitenant, sargent, etc)Thank you, please respond back as soon as possible !

First, the correct spelling is Nassau County, not Nassua .The police Commissioner is Lawrence W. Mulvey; the proper salutation in a letter would be Dear Commissioner Mulvey. The highest ranking sworn officer is Chief of Department Karen O Callaghan. Depending on the topic of your letter she may be the more appropriate contact. The letter then would start Dear Chief O Callaghan.

1. Lawrence W. Mulvey 2. Dear Commissioner Mulvey:3. Commissioner of PoliceAlso, you should be careful to spell Nassau (a before the u, not after) correctly in your letter.