[malloryerik]

Is the internet and electricity being on not possibly because the invaders don't have air superiority?

[dboreham]

Also packet switched networking was invented to tolerate enemy bombing.

[d82nsjk9]

Makes sense, but source?

[hnlmorg]

You're being downvoted for a fair question. I wouldn't exactly cite this as a source to the GP's claim but it does still answer your question: https://en.wikipedia.org/wiki/Packet_switching#History

[d82nsjk9]

I guess I may have come across as rude or lazy for not googling it myself :) Thanks!