A hard landing destroyed a Marine Corps MV-22 Osprey during a training exercise last week, prompting officials to label the incident the most serious kind of aviation mishap and to launch an investigation. The Marine Corps announced last week that the aircraft had "experienced a hard landing" on Aug. 26 at 3:38 p.m. near Creech Air Force Base, Indian Springs, NV. The service's initial statements did not mention the aircraft's destruction, noting that the crew exited safely and that the...