Today I caught a few transmissions that sounded like NYPD on 155.475. I heard Rockaway Beach Blvd mentioned and Avenue J also mentioned. It sounded like typical police chatter so I find it strange they were using the National Interop Channel. I didn't catch a PL, think it was CSQ, but very strong signal here in Jersey. So, for those who like to monitor police out in Brooklyn, definitely a frequency to have in your scanner right now.