Discussion and possible action to approve an annual (July 14, 2018 through July 13, 2019) GPS hardware and monitoring system agreement between Novastar Communications and Webb County for Constable Precinct 4 at a cost of Four Thousand Four Hundred Forty Nine Dollars and Sixty Cents ($4,449.60), and authorizing the County Judge to sign all relevant documents; and any other matters incident thereto. [Requested by Harold Devally, Constable Pct. 4; Account #2202-3170-001-457006 (Law Enforcement-Other)]