those geiger counters and dosing meters to measure the levels of radiation inside it. inside the plant certain the radiation levels were raised quite high. the workers inside, they're only allowed to work in two-hour shifts. we were there for perhaps half an hour. but it was outside the plant where levels really peaked. it was as we drove past reactors 1, 2 and 3. they are the worst damaged. tepko doesn't know what to do with them because the situation is so serious, levels are so high. but brooke, for the 3 1/2,000 workers who have to go there every single day risking their lives, they're certainly the brave ones. >> you talk about the risks. they endured but also you and your crew, anna. what kind of risks were explained to you before you went inside? >> well, we obviously got the rundown as to what we were being exposed. to but the precautions were