A decade ago, luke air force base in air Phoenix, Arizona, was teeming with F 16 vipers as the US. Air Force's primary training base for this type of aircraft. Since 2014, Air Education and Training Command's resident 56 Fighter Wing has gradually relinquished these F 16 to be replaced by Brand News F 35 A's as the fifthgeneration fighter's presence expands throughout its fighter squadrons. The 56 fighter wing was activated August 1547 at Selfridge Field, Michigan