It's just plain idiotic to make this a felony. It's incredibly stupid. Misdemeanor, definitely, depending on how it was used (used to destroy property.) But... felony?? If I inflate a thick balloon until it pops, is that the same thing? What about a water bottle? Felony?
Last year, my class made rockets out of 2-liter bottles. For the first time in about a decade of doing this lab, one of the bottles ruptured ("exploded") at about 95psi. It blew an egg, egg-vehicle, and parachute to smithereens. Should I and my student be in jail for being terruhists? No one was injured, and this year, I'm adding some sort of layer of safety. (I've already moved even further from the parking lot after one of the rockets made a bottle-cap sized dimple in the pavement right next to a car - that would have broken a windshield.) Whoa... maybe they'll consider that I'm training a terruhist cell.
edit: and the student whose egg capsule was completely destroyed on the launch pad is currently studying aero/astro engineering at M.I.T. Some students are inspired by stuff like this, hence take the girl aside & work with her, rather than punitively destroy her life.