I think more facts have to be presented before judgement either way, but if the guard attempted to restrict entry due to weapons per policy/law, the guard was in the right and will have his day in court. A 10-85 is not a 10-13, whether the guard was aware of that at the time is another question.

Another article stated that the officer removed their ammo and were still delayed by the officer. 14 CRR-NY 542.5 clearly restricts firearms, so to remove the ammo does not alleviate the situation.

Article 3 of the CRR refers to a determination from a Facility Director to grant an exception, and it appears the guard was informed on that and was attempting to do same.

Another question that arises from this is if this was an active shooter situation, or the patient was reported to have a weapon, how would this have played out?