Altus, Okla. – Tech. Sgt. Barry G. Landwert, 40, of Altus, died at 10:20 p.m. Dec. 22 in Prescott, Ariz. Visitation 11 a.m. – 1 p.m. Tuesday with services at 1 in the Jones-Kenney-Zechman Funeral Home; military graveside services by the United States Air Force will be held in Glen Haven Memorial Gardens.