One Iowa National Guard soldier is still in the hospital after last night’s emergency landing of a Guard helicopter in eastern Iowa.The two-seat A-H-1 Cobra gunship lost power during a training mission and made a hard landing in a corn field in Benton County near Vinton. Guard spokesman Colonel Robert King says two officers were aboard.King says both officers were taken to a Waterloo hospital and one was kept overnight for relatively minor injuries. Their names have not been released. The Cobra is a Vietnam-era chopper which King says has not been prone to problems.The aircraft can carry all sorts of missiles and guns but King says this one was unarmed. It’s still sitting in the cornfield and will remain there until the Guard can coordinate another aircraft to lift it out and take it back to the Waterloo hangar for inspection and repairs.