A Suwanee man was sentenced in federal court Tuesday on assault charges for attacking a U.S. Army Corps of Engineer park ranger in a July 15, 2012, incident. Charlie Brown Jordan, 26, was ordered to serve 18 months in prison after he pleaded guilty in July to punching Ranger Ken Weiner at Burton Mill Park off Gaines Ferry Road in Hall County. The incident spurred a change in state law governing the prosecution of attacks on park rangers.