The Chesterfield Township Police Department is planning to add a second K-9 cop to the ranks - thanks to a little help from their friends.A K-9 unit was reinstated in the township last year for the first time since 2012. The effort was led by the nonprofit Friends of Chesterfield Police, which was formed in 2015 to support the department, and spurred by a $35,000 donation from township residents Jim and Janet Riehl, who own Jim Riehl Friendly Automotive Group.