It was incredibly stupid of Trevor Jacob to do what he did, but 20 years?
It was so obviously staged from the get-go, lol.
Deliberately destroying an aircraft carries a sentence of "not more than 20 years." https://www.law.cornell.edu/uscode/text/18/32
He also obstructed an investigation. That is a separate charge.
He’s not going to get anywhere close to 20 years unless he spits on the judge.