OSHKOSH, Wis. (AP) — Oshkosh Corp. and the local Auto Workers Union have reached a tentative agreement on a contract extension the company says will give it a shot at a large military contract. Local 578 members will vote on the 5-year deal on Sunday. It would take affect after the current contract expires at the end of September in 2016. The local union president, Joe Preisler, says the extension will provide stability in Oshkosh for years to come. Neither side would discuss terms of the deal. Oshkosh Corp. wanted the extension to nail down its production costs as it enters the final bidding process to build the Joint Light Tactical Vehicle for the military. The vehicles will replace the Army and Marine Corp. Humvees.