I talked to a young man at our church last summer when this whole tuna question started and he said that while he didn't know if there was tuna in the tuna, he said that what the Subway he worked at had for "tuna" arrived in big plastic bags full of a dried, powdery substance that the workers then had to rehydrate and mix with mayonaise. He said he definitely wouldn't eat it. As far as the claims of chicken, pork and beef DNA-maybe there is cross-contamination in the tuna from serving utensils as the sandwiches are being made?