Here is the real deal of what happened.
NOBODY in the NYPD stormed the building. A group of NYPD crawled across a ladder from a truck, to a side second story window.
They had riot helmets on and regular pistols in regular holsters. NYPD has units called ESU, they have no SWAT , (Typical bad optics in NYC !) ESU has a 2 man plumber sized type trucks, 1 in each Boro 24x7. Their most active jobs are attempted suicides.
Each truck has more special weapons than a normal patrol car. AR-15, normal and sniper scoped, various noxious gasses, ladders, ropes, etc. So if EVERY ESU was at Columbia it would be 10 guys !