The Marine Corps has grounded three types of aircraft -- including the MV-22 Osprey -- for unrelated problems, the Defense Department announced today. Suspension orders were issued late last week (Aug. 25) for the CH-53E Super Stallion transport helicopter, the AH-1W Cobra attack helicopter and the MV-22 Osprey. The Marines Corps announced the suspensions yesterday. "Most significant is the grounding of 165 of the Corps' heavy-lift CH-53E helicopters, eight of which are currently deployed," the DOD announcement states. "The decision...