The man accused of streaking through the Demolition Derby in late July will be arraigned Friday on reduced charges.

Seamus McKinney, 25, was charged in August with a felony and three misdemeanors related to streaking and ramming into a sheriff’s deputy. McKinney pleaded not guilty to all counts.

Earlier this month, the felony charge of interfering with an officer and causing or attempting to cause bodily harm was reduced to a misdemeanor charge, which is punishable by one year in jail and a $1,000 fine. The felony charge carried a possible 10-year prison sentence.

The other three misdemeanor charges are child endangering: committing an indecent or obscene act in a child's presence; interference with a peace officer: resisting arrest; and interference with an officer: obstructing duty. They all carry the same maximum penalty of one year in jail and a $1,000 fine.

County Attorney Steve Weichman could not be reached for comment on the amended felony charge. McKinney's lawyer, George Kuvinka, said he did not want to comment on the case.

Another accused of streaking, Michael Smith, 36, was also arrested at the derby and charged with child endangering. That charge has recently been dropped without prejudice, meaning it can be re-entered. Smith’s attorney, Christopher Leigh, could not be reached for comment on what might come in that case.

Streaking has become a common occurrence at the derby, which the fair board bills as a family event that concludes the county fair. Two years ago, authorities decided to crack down on bare cracks when John Chace Rogers grabbed a fire extinguisher as he ran nude across the arena. An officer used a Taser to subdue Rogers, who was charged with interference of a peace officer. The state later dismissed that charge.

At the most recent derby, there were 13 officers on site, more than in previous years. Authorities also posted signs  announcing that streakers would be charged with child endangerment, but two people ran naked across the arena before the final event anyway.

When a sheriff's deputy tried to stop McKinney as he streaked through the arena, he hunkered down in a “football player's stance and rammed into [the deputy],” according to court documents. After that, the deputy hit McKinney repeatedly in the side.

In both instances, the deputy's actions drew condemnation as being excessive from some residents the community, while others supported the way the streakers were handled.

In an attempt to rein in the crowd's rowdy behavior, the Teton County Fair Board announced Tuesday night that alcohol will no longer be served at the derby.

Yvonne Robertson, the county fair manager, told the Town Council that people will be searched as they enter the derby in an effort to curb drinking and hopefully refocus the crowd’s attention on the cars.

Other changes for next year's derby include a reduction in the number of tickets sold and an earlier start time.

Sheriff’s officials had suggested canceling the event for a year, but Sheriff Bob Zimmer on Tuesday said changes the fair board had made were adequate.