It certainly can't be the oil or dispersant?
Tony Hayward, the chief executive officer of BP, offered another explanation for the fishermen's illness: spoiled food.
"Food poisoning is clearly a big issue," Hayward said Sunday. "It's something we've got to be very mindful of. It's one of the big issues of keeping the Army operating. You know, the Army marches on their stomachs."
An expert on foodborne illness cast doubt on Hayward's theory.