story of hidden bodies? do you believe that? >> no -- well, no, larry, i don't believe that aliens came 500 or 1,000 light years to enjoy some tex-mex cuisine in the northeast and then made a navigation error and crashed into the desert. but there's a whole office of planetary protection within nasa, and it's not to defend us against the aliens as you would in the movies, but simply to understand if we bring rocks back from marches or send rockets to marches, that we don't contaminate either planet, so we don't mistake martian life for earth life or vice versa. >> dan, why doesn't the government treat it seriously. dan first. >> there's all kinds of footage