cyber event centered from china shut down the u.s. embassy in afghanistan. and that compound was on lockdown for several days. under the scenario of the u.s. could consider response using force and it underscores the view the war can be fought on four fronts. we have not yet defined the government role in this new, and i keep using the word domain. for people with my background in the armed forces it is kind of land sea, airspace and cyber. we think of it as a place. in this place, all right, it looks like the american frontier. it looks like texas west of the pecos. reporter: there is really a growing consensus some acts on the web can amount to acts of war and a response can be made by the united states using force, jenna. jenna: interesting, catherine. we have more on this story. thank you. reporter: you re welcome. jon: chinese hackers appear to be playing a game of industrial espionage and it is very serious stuff. according to one of our