attacks. is a fire at a nuclear power plant, i mean, obviously, it doesn't sound good, but are there systems within a plant to automatically fight a fire? >> well, yes, but not all fires. and not all fires at a power plant have catastrophic consequences. we can remember what happened at fukushima. the issues really go to whether the fire may be in the cooling pits, because there, you have material that is particularly radioactive, or if ultimately, a fire could cause a meltdown of the reactor and in that case, you would have a huge release of radioactivity and as i say, the radioactivity that was released in '86 from the chernobyl crisis or tragedy, you know, spread all over not just ukraine, but all