Air Force Chief of Staff Gen. Norton Schwartz today challenged the companies developing the second engine for the Joint Strike Fighter to take on a larger share of the program's cost if they want the effort to survive. “If Rolls [Royce] and [General Electric] is so confident that their product will succeed and bring value to the taxpayer, it would be nice if they put a little bit more against that $1.9 billion bill that they would like the taxpayer...