One thing that comes to mind for me. The mayor said in his news conference that the LEOs were on a CT assignment at Empire State Bldg.
Is this a "seniority" posting?? part of an NYPD task force? A "my brother in law knows someone" assignment?? If there is a task force?? Do the CTTF guys shoot more/train more. The threat is certainly different if this is a dedicated CT posting.