In a new strategy paper released Monday, Air Force Chief of Staff Gen. Charles Brown appears to build on his predecessor's drive to divest from legacy programs and reinvest in modernized, networked capabilities, saying the service has a "unique, but limited" opportunity to make significant changes to prepare to counter future threats. The eight-page document, titled " Accelerate Change or Lose ," calls on the Air Force to reconsider its own "internal impediments to change," and be willing to embrace...