According To The Gallatin County Sheriff's Department:

A felony warrant has been issued for Mark Paul LOGAN for the offense of Assault with a Weapon.  The Gallatin County Sheriff’s Office alleges that LOGAN committed the offense in Gallatin Gateway in the early morning of October 23, 2011.  If anyone knows LOGAN’s current location, immediately call 911 or contact your local law enforcement, or call the the Gallatin County Sheriff’s Office at the numbers listed below.  Callers providing legitimate information that leads to an arrest may be eligible for a Crimestoppers reward.  He is considered to be a high danger risk to others, do not confront him or attempt to detain him.