B-21 Raider: Just the Beginning?.

* Undersecretary of Defense for Research and Engineering Heidi Shyu--like many after the Air Force and Northrop Grumman unveiled the B-21 Raider--gushed about the new aircraft but raised some eyebrows at the Reagan National Defense Forum the following day by suggesting that there was more to come.

"We all saw the B-21 rolled out, right? Well, there's other stuff in development that is even more capable," she said.

And some of it will come from down under. Shyu said the Defense Department has created a "classified construct to share information" with partners from Australia, which solves prior issues with exchanging ideas on top secret programs.

"We're collaborating hand in fist," she said. Technologies developed in...