Hi Ready503310.
I once read an article on a frum law enforcement officer working for the sheriffs department in Rockaway, NY. Other than that, I only know of frum people in the military who are able to keep kosher and observe Shabbos, Succos, Pesach..etc.
Also, there are many jobs within the NYPD held by officers, such as accountants, computers, statistics, programs and policies, etc.
Hatzlacha!!