Weinsteine Vance Coumo
Anon has a theory regarding the significance of the second NYPD Officer

Osborne

What if the purpose of finding the other officer [187] in 2017 was to draw attention to the nypd 9th precinct, which in 2011 saw Manhattan district attorney Cy Vance jr, (son of Cyrus Vance Sr. who served as�Secretary of the Army�under presidents�John F. Kennedy�and�Lyndon B. Johnson�and�Deputy Secretary of Defense�under President Johnson, then�Secretary of State�to President�Jimmy Carter.)

How is NYPD Detective Shaniqua Osborne and the 9th precinct tied to DA Cy Vance? Well, Their is one major case of two NYPD Cops affectionately known as the "rape cops" who were from the 9th precinct.

DA Cy Vance Gave Police Officer Kenneth Moreno, ar a one year sentence not because he raped a drunk woman, but because he violated procedure, and made a fake 911 call to return to the drunk womans apartment with a key to the building. Oh, and they also found a small amount of Heroin in his locker, that the officer "forgot to check in."
http://www.dailymail.co.uk/news/article-1358889/NY-police-officer-Kenneth-Morenos-chilling-taped-confession-rape-victim.html

Oh, and an intern was sexually assaulted at his DA Office, and the the intern was to afraid to come forward, or say anything at all.

Cy Vance has been involved in other high profile cases, such as the head of the IMF Domonique Straus-kahn alleged rape of a masseuse for which Vance Acquitted Kahn.
https://www.nytimes.com/2011/05/27/nyregion/verdict-in-rape-case-may-have-an-impact-on-cyrus-vance.html