CARMEL, Ind. (AP) _ A central Indiana power system administrator cited in a massive 2003 blackout says safeguards installed over the last decade should prevent a similar incident from occurring.
 
  Vice President Joe Gardner tells The Indianapolis Star that  Carmel-based MISO has updated its technologies and has more people monitoring data points and taking real-time measurements than ever before.
 
  The Aug. 14, 2003, blackout was the largest in U.S. history. It left 50 million people in the dark in eight states and parts of Canada.
 
  The blackout was ultimately blamed on a tree branch in Ohio that touched a power line. MISO shared the blame because it lacked real-time data of the event and failed to grasp the scope of the problem.