Thousands if not millions of of American lives were saved during World War Two by the Lend-Lease program to arm America's allies, Britain and the Soviet Union. Without it it is almost certain that Nazi Germany would have won the second world war. This "storage" program would seem to be an attempt to do the same thing again, though not yet on such a large scale. It can only be understood as the beginning of American recognition that world terrorism is a serious threat to national survival and the US is unlikely to prevail without a lot more Israeli help.
Two seriously wounded in crime-related shooting in Netanya (Haaretz)
from the article: U.S. to store $800m in military gear in Israel