U.S. Marines demonstrate the use of a portable water distribution system which can be deployed on aid missions on the USS Harpers Ferry, about 50 nautical miles south of Maynmar's Irawaddy Delta May 17, 2008. The USS Harpers Ferry is currently stationed in international waters to the south of the delta pending permission to carry out the delivery of humanitarian relief goods to people hit by Cyclone Nargis. REUTERS/Vivek Prakash (INTERNATIONAL WATERS)