that is one of the problems with having an aircraft where each air frame costs 1-2 Billion Dollars each. While it may or may not be good at evading enemy detection, mother nature is still a cruel mistress and airplanes do fall out of sky.
At 1-2 billion a pop, this will continue to be the most expensive crash.
I am just glad the pilots were able to eject.
Yeah ACES II an oldie but a goodie