Air Force officials recently announced that some copies of the printed versions of the 2011 Professional Development Guide will need to be returned to unit Weighted Airman Promotion System monitors, as the documents may have a number of errors. At least 750 PDGs contain errors, so Airmen should review their copy of the PDG to make sure it does not contain any of the errors. (U.S. Air Force photo by Senior Airman Jason J. Brown/Released)