for years, war has looked like this. [gunfire] shepard: but modern battles may require only a computer click to send devastating attacks screaming through cyberspace. and now the pentagon is preparing for the future. tonight, inside america s next generation computer combat. plus, sarah palin s emails. the state of alaska has kept tens of thousands of them under wraps, but not for much longer. tonight, what officials are finally ready to release. but, first from fox this wednesday night. tweet tweet, the story of the congressman and the underpants. when your name is wiener, you get a lot of people who are doing mischievous things making jokes about your name. tonight, the new york democrat congressman anthony weiner commenting today on a photograph of some guy in his underwear that somebody sent from the lawmaker s twitter account last week to a college student. he says he didn t send it.