Why the US Air Force Won't Say How Much the New B-21 Bomber Will Cost
![Why the US Air Force Won't Say How Much the New B-21 Bomber Will Cost](http://cdn5.img.sputniknews.com/images/102641/30/1026413006.jpg)
After spending over $1 trillion on the beleaguered F-35 Joint Strike fighter, the US has been cagey about the cost of its B-21 bomber program, justifying the secrecy by claiming national security.