Workers prepare a tsunami early warning system buoy on search vessel Baruna Jaya III, off Jakarta's harbour, September 19, 2007. Indonesia will install the third tsunami detection buoy off the coast of earthquake-prone Sumatra, an official said on Wednesday, after a strong quake killed more than 20 people and damaged thousands of homes there last week. The U.S. embassy will hand over the latest buoy, funded by the United States, to Indonesian officials later on Wednesday when it will then be shipped to the western coast of Sumatra for installation, according to an official at the research and technology ministry.