Meanwhile, the New York State Police and the New York National Guard will respectively double and triple personnel deployment throughout the city. The Port Authority of New York and New Jersey Police Department will more than double personnel deployment and add patrols at airports, bridges, tunnels and other high-profile locations.
I was at grand central two weeks ago… can confirm Military presence there and stationed just outside and underneath at subway stops
but we have have national guard troops on and off for a long time.
Remember that ISIS Truck attack in November 2017?
It was 5 days before the NYC marathon, the biggest street event in NYC
https://abcnews.go.com/US/york-city-marathon-taking-place-wake-deadly-truck/story?id=50932522
It wasn't martial law back then either