David Duchesne was fined $150 in Salem District Court on Tuesday.
Prosecutors say a 20-year old man climbed onto the roof of a home. When police showed up to bring him to a psychiatric hospital.
Prosecutors say the 19-year-old Duchesne and another man then yelled "jump" and shouted profanities.
Duchesne was contrite in court and said he wasn't thinking. he told a judge he would have felt "terrible" if the man had jumped.
The other suspect has decided to fight the charges.
The man on the roof came down after a 12-hour standoff.
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