The sky isn't falling and neither is the Global Positioning System, the U.S. Air Force said during a Twitter news conference.I, Cringely waas up?podcastSeems the GAO has been putting out press releases and surpirse, surprise! The MSN has been swallowing them whole and just changed a few nouns and verbs and releasing them more or less verbatim with little or no journalistic oversight. The countermeasure? Twitter! The people in the know have been countering the media blitz to the people directly via tweets. Good to know the sky ISN'T falling after all.