Joel Alvarez, 35, of Sherman, was sentenced to 17 years in prison for Aggravated Assault against a Public Servant and 10 years for Assault of a Peace Officer. The sentence resulted from an open plea agreement with the Grayson County Criminal District Attorney’s Office. The sentences will run concurrent, but due to the nature of the Aggravated Assault conviction the defendant must serve at least half of his sentence before consideration for parole. The Honorable Judge Jim Fallon of the 15th District Court accepted the plea agreement and pronounced the sentence.