Someone should tell that to the HR manager over at Brown's Ferry in Alabama. I interviewed for a job in March of 2006, was told I would be given an answer in a month, didn't get one until July, and then when I (truthfully) told them I had a competing offer, was told (and I quote directly), "Do what ya gotta do."
I've dealt with civilian government employees. 99 percent of them give the other 1 percent a bad name.