U.S. Coast Guard Station Apra Harbor crews sortie offshore in response to a potential tsunami off Guam on July 30, 2025. The U.S. Coast Guard Captain of the Port set Guam and the Commonwealth of the Northern Mariana Islands ports to Heavy Weather Condition Zulu on Wednesday, July 30, as of 2 p.m., affecting commercial vessels at or over 200 gross tons, in response to a tsunami advisory triggered by a major earthquake off Russia's Kamchatka Peninsula. (U.S. Coast Guard photo)