(Harrisburg) -- U.S. and Pennsylvania flags are to be lowered to half-staff to honor two Pennsylvania Marines killed in Afghanistan last month. Governor Corbett has ordered all U.S. and Pennsylvania flags in the Capitol Complex and at commonwealth facilities in York and Lackawanna counties to fly at half-staff tomorrow. 29-year-old Sergeant Christopher Wrinkle of Dallastown and 29-year-old Staff Sergeant Patrick Dolphin of Moscow, Lackawanna County, died July 31-st in a non-combate incident. The governor had previously ordered flags lowered tomorrow at the Capitol Complex and in Bucks County in honor of Army Sergeant First Class Kenneth Elwell. The 33-year-old was one of two soldiers killed July 17th by a roadside bomb in Afghanistan. He will be buried tomorrow at Arlington National Cemetery.