 On 7 April 1998, Air Combat Command received a message from the Office of the Secretary of the Air Force ordering cessation of SR-71 operations and disposal of all related assets.The last member of Detachment 2 left Edwards AFB, CA on 10 January 1999.Upon transfer of the two remaining airframes to Air Force Materiel Command, Air Combat Command declared the SR-71 retirement complete as of 15 July 1999.