You may see the name every day at the Tot Lot on the corner of Cortelyou and Argyle: Federico Narvaez. And you may know that Narvaez was a Lieutenant in the 70th Precinct when was killed on duty in 1996 [http://www.nytimes.com/1996/10/20/nyregion/killing-brings-a-brutal-end-to-4-decades-of-crime.html]