charles casto. he's a us nuclear safety expert who is involved in containing the fukushima nuclear disaster in japan. dr. customer, thanks for being with us. tell us what went through your mind when you heard that this ukrainian nuclear power plant was on fire. well obviously, terry, that's a very troubling situation. there is no rational reason for attack on a nuclear power plant. tell us how dangerous it is to have a war being fought near a nuclear power plant. well obviously is that situation is troubling. however, as you've seen with the state media talking about that it's stable, the operators are able to deal with the types of situations we plan for the situations in the, in the design of the plan is very robust. nevertheless, that is not a challenge that you want to present to anyone to any operator, any new facility anywhere. what exactly do you have to watch out for me if the tanks are firing even if, if they're not targeting the plant itself, but somewhere near it. if a shell hits the nucl