In this case, "act of war" means whatever a propagandist wants.
The FBI shill is just blowing smoke from his orifice. Just blabbing loudly. No missiles will be launched.
With regards to a genuine casus belli related to hacking, Stuxnet was probably as close as anything to an attack on national resources by other national powers.
The US military has had a curiously close relationship to Hollywood, though. Any motion picture which portrays the valor of US troops, the existential threat posed to the US by small Communist countries, or the need for ever-greater investment in military-industrial power, will get a green light to film on military bases, use military equipment as props, and probably even have a few blushing colonels appearing in bit parts.
So perhaps the US government is a bit more solicitous toward Sony than it would be toward, say, Walmart.
Biting the hand that feeds IT
