So Northrop Grumman, Boeing, and Lockheed Martin.
You can think of the big five there, Lockheed Martin, Raytheon, Boeing, blah, blah, blah.
I don't know how likely it is a Lockheed Martin person would have that sort of institutional history.
42 are Boeing, Lockheed Martin, and Northrop Grumman.
Of course, there's spinoff companies of all of these, like Lockheed Martin's former