Man admits to killing pal with an AR-15 while tripping on 'shrooms

BILLINGS, Mont. -- A Billings man accused of fatally shooting a friend and wounding himself with a military-style AR-15 rifle while the two were tripping on mushrooms has pleaded guilty to negligent homicide. The Billings Gazettereports30-year-old William Kenney entered his plea June 28, and prosecutors will ask for a 25-year prison sentence. Investigators say Kenney...