Allegations that the Air Force plans to provide unsafe aircraft to the Afghan military in the wake of a drawdown of U.S. forces has the service pointing to NATO Air Training Command as the agency responsible for defining the requirements for that aircraft. Safety issues have arisen amid a public legal fight over which contractor has the right to build the Light Air Support (LAS) aircraft. Sierra Nevada Corp. and its partner, Brazil's Embraer, won the $355 million contract in...