    Sentence i: The government   said FirstEnergy Nuclear determined  thet a contractor had  established an unprotected high-  speed computer connection to its    corporate network  that allowed the “ Slammer  infection to spread|  internally .    Sentence 2: It said FirstEnergy  determined that a contractor had|  established an unprotected computer  connection to its corporate network!  thet allowed|  the so-called “Slammer * * worm to]  spread internally .