Pentagon Fighter-Jet Breach

There has been a lot of discussion about the recently disclosed Pentagon breach where classified plans regarding the 300 Billion Joint Strike Fighter Project were compromised. Most of the posts and articles I have been reading have discussed this in terms of the risk around those specific plans getting into the wrong hands. In my opinion, that is somewhat a sub-story. To me, the bigger points that we should be talking about are these:

1) This breach happened in 2007 and we are just learning about this now?
2) Similar incidents have also breached the Air Force’s air-traffic-control system.
3) They say the criminals got away with “several terabytes of data”. Are they sure that the only thing that was taken were these fighter plans?
4) The system “had been repeatedly broken into”
5) The breach occured through more than one 3rd party network. They also mention that Lockheed Martin is the primary contractor on the project without specifically saying that the breach occured through them.

One point the article makes that I completely agree with is that things do seem to be heating up in a Cyberspace war between nations, groups, and individuals.