. ▁So on ▁the ▁launch ▁team ▁was ▁able ▁to ▁verify ▁the ▁Vent ▁Arm ' s ▁position ▁with ▁the ▁help ▁of ▁a ▁closed ▁circuit ▁camera , ▁and ▁the ▁count down ▁clock ▁res umed ▁after ▁approximately ▁ 2 ▁minutes , ▁ 1 8 ▁seconds . ▁ ▁The ▁final ▁flight ▁of ▁Space ▁Sh utt le ▁Atl ant is ▁launched ▁from ▁the ▁Kennedy ▁Space ▁Center ▁on ▁ 8 ▁July ▁at ▁ 1 1 : 2 9 : 0 3 . 9 ▁ED T ▁with ▁launch ▁comment ator ▁George ▁D iller ▁saying , ▁" Two , ▁one , ▁zero ▁and ▁lif to ff ! ▁The ▁final ▁lif to ff ▁of ▁Atl ant is ▁– ▁on ▁the ▁shoulders ▁of ▁the ▁space ▁sh utt le , ▁America ▁will ▁continue ▁the ▁dream ". ▁The ▁launch ▁was ▁che ered ▁by ▁a ▁crowd ▁of ▁nearly ▁one ▁million ▁inside ▁the ▁Kennedy ▁Space ▁Center ▁and ▁in ▁the ▁surrounding ▁area . ▁Power ed ▁flight ▁conform ed ▁to ▁the ▁standard ▁tim eline , ▁with ▁the ▁two ▁boost ers ▁separ ating ▁from ▁the ▁E T ▁after ▁two ▁minutes ▁and ▁five ▁seconds , ▁and ▁the ▁main ▁engine ▁cut off ▁( ME CO ) ▁occurr ing ▁at ▁ 1 5 : 3 7 : 2 8 ▁G MT ▁at ▁a ▁Mission ▁E lapsed ▁Time ▁( ME T ) ▁of ▁ 8 ▁minutes ▁and ▁ 2 4 ▁seconds . ▁The ▁external ▁tank , ▁E T - 1 3 8 , ▁separated ▁from ▁the ▁sh utt le ▁at ▁ 1 5 : 3 7 : 4 9 ▁G MT . ▁A ▁modification