how LIKELY is my brother to get into trouble?

my brother loves trains, but sometimes lets his passions get the best of him

he lives near a train crossing, so the other day he noticed one of the cross bars, the things that come down when a train is passing was broke and laying on the sidewalk near the street, it was still attached to the pole but barely, just by a black cable or wire, or so he said.

so he took a pocket knife and cut one of the little red lights off of it as a, quote, ”souvenir”

i hate him doing crap like that

i know he CAN get in trouble, but how likely is it?

i am kinda worried, he is a good guy and good family man just makes goofy decisions sometimes

would the city likely prosecute for what amounts to a misdemeanor? would they really go through all the trouble for something like that?

knowing him as i do, he meant no harm, he isn’t like some gang member going around spraying graffiti everywhere

still, it was wrong, just looking for input