safe for us to eat. it looks like a scene straight out of a crime scene show. what you re looking at is a chain of custody record because the fish that are being tested are literally treated like evidence. you have to keep track of where it s been and who s handled it. these are fish being tested, trying to figure out if they re safe. aluminium foil. special trumts, workers wearing gloves, they want to be very careful to not contaminate it. thousands of fish being tested since april 28th, a week after the oil spill. they re being brought here in these huge ice units. we re here in mississippi, got a lot of fish behind us here. bagged and tagged. yes, they are. this is part of the process? yes. dr. john stein, head of noaa s seafood testing program. the question always comes up