Lost in all the media attention given to the nuclear situation is the fact that the US military has continued to conduct relief operations to assist the Japanese people:

U.S. military personnel have delivered 40 tons of supplies to the hardest-hit areas of Japan, as humanitarian aid continues in the face of an ever-increasing threat from the failing Fukushima Dai-ichi power plant.The U.S. 7th Fleet reported that aircraft from the USS Ronald Reagan Carrier Strike Group flew 15 sorties Wednesday, delivering food, water, clothing, medical supplies and blankets to parts of Japan affected by Friday’s earthquake and tsunami.  [Stars & Stripes]

You can read more about the relief effort being spearheaded by the US Navy at the link.  Besides the humanitarian relief according to the article the US Navy has offloaded a number of high pressure water pumps which are on their way to assist in the cool down of the Fukushima reactors.  It really is amazing what the US Navy is able to do on such short notice when disaster like this hits.