The Nuclear Energy Institute reports:
UPDATE AS OF 10:00 A.M. EDT, SUNDAY, MARCH 20:
A two-part operation to spray water into the used fuel pool at Fukushima Daiichi reactor 4 ended just before 7 A.M. EDT. Japan’s defense ministry announced that the Self Defense Force discharged more than 100 tons of water at the pool, and concluded that much of it reached inside the reactor building.
read more here.
Engineer Zero 
Then I read around midnight that they were evacuating the plant again because of a fire. At that point I realized that the news on the plant is a roller coaster and I wish I could get off the ride.