9/11 deaths was ruled to be in the line of duty, no matter how many years post 9/11 or what the cause, so long as it is related. There was a suicide who was determined to be a 9/11 related death due to depression. I was looking for deaths such as sudden stroke in 90 year old retired cops, or active cops killed in car accidents on vacation, that kind of stuff. You dont see it from New York City. Ive heard theyre sticklers for in-the-line-of-duty deaths. Ya gotta actually be on the clock. . . or its gotta be in some way related to work. It makes a difference for the pension the family gets.
Here is one, shot July 5, 2017
https://nypost.com/2017/07/05/nypd-officer-shot-on-duty-in-critical-condition/
http://www.breitbart.com/big-government/2017/07/05/nypd-officer-assassinated-unprovoked-attack/
Ah, gotcha. Further research is required.
This lists more details for fallen NY officers & shows several detectives mid 2017