    Sentence 1: The government said  FirstEnergy Nuclear determined. that 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 that  allowed the so-called “Slammer '' worm  to spread internally .