(1) Possession or use of firearms, explosives, dangerous chemicals, or other dangerous weapons includes unauthorized possession of firearms, explosives, dangerous chemicals, or other dangerous weapons or instrumentalities on university premises, unless specifically authorized by the university president or delegee.

(2) Firearms include, but are not limited to, what are commonly known as air guns or rifles, BB guns, and pellet guns, and any instrument used in the propulsion of shot, shell, bullets, or other harmful objects by the:

(a) Action of gunpowder or other explosives;

(b) Action of compressed air; or

(c) Power of springs or other forms of propulsion.

(3) This includes the exhibition or display of a replica of a dangerous weapon prohibited under this subsection if done in a manner and at a time or place that either manifests an intent to intimidate another or that warrants alarm for the safety of other persons.