The Washington Post today carried this article detailing efforts to study and preserve the USS Arizona, a war memorial and the grave of more than 1100 sailors. It's estimated the wreck still holds some 500,000 gallons of fuel oil in its remaining bunkers, and scientists want to find out if they can determine when these structures will be in danger of collapsing, and what (if anything) can be done to prevent it. The research should also help in preservation efforts of other shipwrecks all over the world.