Two rangers from Acadia National Park have been cleared of using excessive force at a late-night party last year that left a man injured. The National Park Service says Kevin Donnell and Jim Lyon will not face disciplinary action and the U.S. Attorney’s office has declined to prosecute them. Tim Wild and Catherine Junkert were among a group of people that hiked up Day Mountain last August. Park rangers alleged there was underage drinking and marijuana use. The rangers tried to break up the party and Wild ended up with facial fractures and a concussion.Lyon reported Wild as belligerent and struggling to avoid handcuffs. Wild says he was deliberately thrown to the ground.A spokesperson for the National Park Service told TV5 news the investigation was taken very seriously, which is why it took almost a year to complete. Despite the decision, Wild’s lawyer is preparing to sue the federal government.Jon Holder say the government has until next Friday to respond to a damage claim by his client, otherwise Holder will file a civil lawsuit.