I agree with you, nobobdy wants anyone to be hurt, but then why announce the fact beforehand about their trip, then? What genius decided on that one? Bush, Cheney and just about every other high ranking gov't official announce their trips to Iraq after they return for obvious security reasons. Are Pelosi and co. just stupid or is it more than that?
My opinion, based on their public behaviour (I have not personally met or conversed with any of these creatures): They're grandstanding, self important, megalomaniacal buffoons, with only the shakiest grip on reality. They will pass up no opportunity to blow their own horns, even if doing so would (objectively) put them in physical danger.