As the Next Generation Air Dominance platform moves toward the engineering and manufacturing development phase, Air Force Secretary Frank Kendall said Monday the service will refine the acquisition process to avoid the "malpractice" of the F-35 Joint Strike Fighter. The service last week issued a solicitation for the NGAD platform , that will be part of a family of systems, formally starting the source-selection process. Much of the program remains classified, but work began years ago on the sixth-generation aircraft...