▁ 2 0 1 1 ▁as ▁the ▁intended ▁launch ▁date ▁of ▁the ▁ST S - 1 3 5 ▁mission . ▁ ▁Roll out ▁Atl ant is ▁was ▁rolled ▁out ▁to ▁La unch ▁Pad ▁ 3 9 A ▁on ▁ 1 ▁June . ▁The ▁first ▁motion ▁of ▁Atl ant is ▁out ▁of ▁the ▁Ve h icle ▁Assembly ▁Building ▁began ▁at ▁ 2 0 : 4 2 ▁ED T ▁on ▁ 3 1 ▁May ▁ 2 0 1 1 . ▁Due ▁to ▁a ▁minor ▁hyd ra ul ic ▁leak ▁on ▁a ▁corner ▁val ve ▁for ▁the ▁jack ing ▁and ▁elev ation ▁system ▁on ▁the ▁craw ler - trans porter , ▁the ▁move ▁was ▁delayed ▁by ▁ 4 0 ▁minutes . ▁After ▁the ▁ ▁journey , ▁the ▁sh utt le ▁was ▁secured ▁on ▁the ▁launch ▁pad ▁at ▁ 0 3 : 2 9 ▁ED T ▁on ▁ 1 ▁June ▁ 2 0 1 1 . ▁ ▁Lar ge ▁crow ds , ▁including ▁the ▁families ▁of ▁NASA ' s ▁work force , ▁were ▁present ▁during ▁the ▁roll out . ▁The ▁ST S - 1 3 5 ▁crew ▁was ▁also ▁at ▁the ▁Kennedy ▁Space ▁Center ▁to ▁witness ▁the ▁last - ever ▁roll out ▁of ▁a ▁Space ▁Sh utt le . ▁The ▁crew ▁participated ▁in ▁an ▁inform al ▁Question ▁& ▁Answer ▁session ▁with ▁news ▁media , ▁which ▁was ▁a ired ▁live ▁on ▁NASA ▁TV . ▁While ▁Atl ant is ▁was ▁rolled ▁out ▁to ▁the ▁launch ▁pad , ▁Ende av our ▁was ▁landing ▁a ▁few ▁miles ▁away ▁at ▁the ▁Sh