9 ▁and ▁Space ▁La unch ▁Complex ▁ 3 4 . ▁ ▁History ▁▁ ▁The ▁facility ▁was ▁constructed ▁by ▁the ▁United ▁States ▁Air ▁Force ▁in ▁the ▁late ▁ 1 9 5 0 s ▁for ▁the ▁T itan ▁I ▁Miss ile ▁Program , ▁modified ▁in ▁ 1 9 6 4 ▁for ▁the ▁T itan ▁III ▁Program , ▁and ▁further ▁modified ▁in ▁the ▁late ▁ 1 9 8 0 s ▁for ▁the ▁Star bird ▁launch ▁vehicles ▁associated ▁with ▁the ▁sh utt le ▁Star lab ▁mission . ▁Several ▁T itan ▁I ▁rock ets ▁and ▁four ▁or ▁five ▁T itan ▁III ▁rock ets ▁were ▁launched ▁from ▁S LC - 2 0 . ▁S LC - 2 0 ▁was ▁de activ ated ▁in ▁ 1 9 9 6 . ▁ ▁In ▁ 1 9 9 9 , ▁the ▁site ▁was ▁re - activ ated ▁to ▁support ▁new ▁launch ▁facilities ▁under ▁the ▁direction ▁of ▁Space ▁Florida ▁for ▁commercial ▁launch es . ▁The ▁re - activ ation ▁included ▁up gr ades ▁to ▁La unch ▁Pad ▁A ▁and ▁the ▁construction ▁of ▁a ▁new ▁building ▁along ▁the ▁per imeter ▁road , ▁n ortheast ▁of ▁the ▁block house . ▁ ▁In ▁ 2 0 0 6 , ▁the ▁site ▁was ▁being ▁used ▁by ▁NASA ' s ▁Advanced ▁Technology ▁Development ▁Center ▁( AT DC ), ▁a ▁research ▁and ▁development ▁project ▁to ▁provide ▁infrastr ucture ▁to ▁test , ▁demonstrate ▁and ▁qual ify ▁new ▁space port ▁techn ologies . ▁The ▁site ▁was ▁shared ▁with ▁the ▁Florida ▁Air ▁National ▁Guard . ▁ ▁In ▁February ▁ 2 0 1