1 0   pm ▁out ▁of ▁each ▁city . ▁Sh utt le ▁emphas ized ▁convenience ▁and ▁simplicity — re volution ary ▁in ▁an ▁era ▁when ▁air ▁travel ▁was ▁considered ▁a ▁lux ury . ▁ ▁International ization ▁began ▁as ▁Eastern ▁opened ▁routes ▁to ▁mark ets ▁such ▁as ▁Santo ▁Dom ingo ▁and ▁N ass au , ▁Bah am as . ▁Services ▁from ▁San ▁Juan , ▁Puerto ▁Rico ' s ▁Luis ▁Mu ñ oz ▁Mar ín ▁International ▁Airport ▁were ▁expanded . ▁In ▁ 1 9 6 7 , ▁Eastern ▁purchased ▁Mack ey ▁Airlines , ▁a ▁small ▁air ▁car rier ▁primarily ▁operating ▁in ▁Florida ▁and ▁the ▁Bah am as ▁as ▁part ▁of ▁this ▁expansion . ▁ ▁Eastern ▁bought ▁the ▁Lock he ed ▁L - 1 0 1 1 ▁Tri Star ▁and ▁Air bus ▁A 3 0 0 ▁wide body ▁j ets ; ▁the ▁former ▁would ▁become ▁known ▁in ▁the ▁Car ib bean ▁as ▁El ▁Grand ote ▁( the ▁huge ▁one ). ▁Although ▁Eastern ▁had ▁purchased ▁four ▁ 7 4 7 s , ▁the ▁delivery ▁sl ots ▁were ▁sold ▁to ▁Trans ▁World ▁Airlines ▁( T WA ) ▁when ▁Eastern ▁decided ▁to ▁purchase ▁the ▁L - 1 0 1 1 . ▁ ▁Due ▁to ▁massive ▁del ays ▁in ▁the ▁L - 1 0 1 1 ▁program , ▁mainly ▁due ▁to ▁problems ▁with ▁the ▁Roll s - Ro y ce ▁R B 2 1 1 ▁engines , ▁Eastern ▁le ased ▁two ▁Bo eing ▁ 7 4 7 - 1 0 0 s ▁from ▁Pan ▁Am ▁between ▁ 1 9 7