3/22/2011 - Personnel from the 730th Air Mobility Squadron and members from a Royal Australian Air Force C-17 Globemaster III off load a water cannon system here March 22. The system is a series of pumps and trailers that can be remotely maneuvered into a location. (U.S. Air Force photo/Staff Sgt. Robin Stanchak

3/22/2011 - A water cannon system transported to Yokota by a Royal Australian Air Force C-17 Globemaster III is downloaded from the aircraft here March 22. (U.S. Air Force photo/Staff Sgt. Robin Stanchak)

3/22/2011 - Senior Airman Jack Hunter, 730th Air Mobility Squadron, ramp services technician, tightens down a pallet containing parts for a water cannon system here March 22. A Royal Australian Air Force C-17 Globemaster III delivered the equipment to Yokota. (U.S. Air Force photo/Staff Sgt. Robin Stanchak)

3/22/2011 - A Royal Australian Air Force C-17 Globemaster III transports a remotely operated water cannon system to Yokota March 22. The system is a series of pumps and trailers that can be remotely maneuvered into a location. (U.S. Air Force photo/Staff Sgt. Robin Stanchak)

3/22/2011 - A Royal Australian Air Force C-17 Globemaster III transports a water cannon system to Yokota March 22. The system is a series of pumps and trailers that can be remotely maneuvered into a location. (U.S. Air Force photo/Staff Sgt. Robin Stanchak)

3/22/2011 - A Royal Australian Air Force C-17 Globemaster III carrying a water cannon system lands at Yokota March 22. The system is a series of pumps and trailers that can be remotely operated. (U.S. Air Force photo/Staff Sgt. Robin Stanchak)