A 23-year-old Prince William County man is fighting life-threatening injuries after a 40-year-old, Tyree M. Alexander, stabbed him in the throat with a box cutter around 4:30 a.m. in Manassas, Virginia this morning. What did the young man do to provoke such a violent reaction? The Examiner and WUSA9 report that the he threw a snowball at Alexander, who was arrested after police arrived and found him fighting with his neighbors.