Dark screen Unix terminals. Check. Computer viruses planted
to explode a computer. Check. Hacking done in a few seconds.
Check. It is in this movie that the term "Fire Sale" in cyberwarfare
is introduced, a three-stage systematic
attack on infrastructure. Fire Sale because everything must go. The
order is a bit strange: Stage 1: transportation, Stage 2: Financial
system and Stage 3: Utility systems.
An other interpretation gives an other order:
Financial Infrastructure Resources Environment
There is a bit of musing about this in the (much more intellectual)
movie "Travelling Salesmen": you don't want to take the utility system
down first because then you can no more hack them. That is why this
goes last.