butch cassidy and the sundance kid at the end when butch and sundance are being followed and vicki condoleezza these guys and the people that are tracking them keep stink eye domestic you can use to use all these techniques to the standard finally butch and sundance look at each other and said who are these guys? i think that was the response many people had in omaha of the de porres club the who are these guys? what to do what and what are they equipped that was a great question because had you put to any other location, that would've been the same response. it would have been this is another one of those groups. that were not any other groups like that and that to me is one of those important parts is no such a pioneering effort in such an unlikely place. >> presidential candidates often release books to introduce themselves to voters and to vote their views on issues. here's a look at some books written by declared candidates for president.