I was once the executor of an estate where estate papers were in box in a bank vault that flooded. Fortunately when water receded the box in question was above the water line. But half the boxes were flooded for an extended period and all paper items in them destroyed. Fire and earthquakes can be other issues. FDC and banks typically exclude coverage of box contents such that you need separate coverage if you want/need it.
http://r.search.yahoo.com/_ylt=A0geJ...1CbPsLVSWZau8-