I have a fun side-gig in entertainment and thus witness constantly the massive amounts of LE officers who are required to be hired at each of these events just sitting around doing nothing.
Either way, what you are suggesting has been done, and was the standard before many of these requirements were in place. The problems in police staffing that resulted were the reason these requirements originated.
https://minnesotareformer.com/2023/10/17/small-business-owne...
It's my anecdote that I'm trying to make the point with; these - supposedly - highly trained folks with very expensive equipment are being called in to do all kinds of work for which that training and equipment are unnecessary. There is an opportunity for other folks with more directed training and equipment to fill these roles in society.
That seems pretty out of the ordinary for an event in the US.
This is largely a problem of creation of qualified immunity caste system IMO.
The Supreme Court has ruled that the police have no duty to protect the public[0]. Worse, in that same decision, they ruled that states cannot impose a duty to protect the public on the police through legislation.
Since this case is about NYPD, it's worth mentioning the case of Lozito vs. NYC. There was a serial killer who went on 28-hour killing spree (four people died in total). The police were dispatched to a subway station in order to catch the suspect. When they arrived, the killer began stabbing Joseph Lozito. Instead of intervening to catch the serial killer that they had been specifically dispatched to apprehend, the police hid in a booth and let him stab Lozito. Lozito managed to disarm and incapacitate the killer, at which point the police decided to emerge from the booth and arrest the killer.
Lozito sued the NYPD. He lost because the SCOTUS ruling created binding precedent that police have no duty to protect the public.
> Now of course I'm sure that police presence has stopped many muggings
This is a common refrain, but research has consistently shown an extremely weak-to-nonexistent correlation between police presence and violent crime.
[0] https://www.nytimes.com/2005/06/28/politics/justices-rule-po...
I'm sure they occasionally use force to intervene in a crime, but it must be extremely rare versus just showing up with clipboards and a concerned look.
Police behavior is highly regional and subjective, with a sprinkling of just plain randomness (bad day? good day? roll the dice, armed and privileged either way!)