GRAND JUNCTION, Colorado, Nov. 15 -- The office of the U.S. Attorney for the District of Colorado issued the following news release: The United States Attorney's Office for the District of Colorado and the 21st Judicial District of Colorado announce that Nathanial Matheny, 23, of Grand Junction, was sentenced to 71 months in federal prison after pleading guilty to one count of possession with the intent to distribute a substance containing a detectable amount of fentanyl and to 48 months in sta  more