▁ ▁April ▁ 1 1 , ▁ 1 9 6 7 ▁( T ues day ) ▁All ▁ 3 9 ▁persons ▁ab o ard ▁an ▁Air ▁Alg érie ▁DC - 4 ▁were ▁killed ▁when ▁the ▁plane ▁crash ed ▁into ▁a ▁hill side ▁near ▁the ▁city ▁of ▁O u arg la ▁in ▁Al ger ia . ▁ ▁The ▁DC - 4 ▁was ▁coming ▁in ▁for ▁a ▁final ▁approach ▁to ▁the ▁air port ▁at ▁T aman r asset ▁at ▁the ▁end ▁of ▁a ▁flight ▁from ▁Al gi ers . ▁Th ailand ▁allowed ▁American ▁B - 5 2 ▁bom bers ▁to ▁begin ▁flying ▁bomb ing ▁miss ions ▁in ▁Vietnam . ▁Walter ▁C ron k ite ▁returned ▁to ▁the ▁CBS ▁Even ing ▁News ▁for ▁the ▁first ▁time ▁since ▁the ▁start ▁of ▁the ▁A FT RA ▁strike ▁on ▁March ▁ 2 8 . ▁ ▁During ▁his ▁absence , ▁Arnold ▁Z en ker , ▁the ▁network ' s ▁manager ▁of ▁news ▁programming , ▁delivered ▁the ▁news , ▁announ cing ▁each ▁day ▁that ▁he ▁was ▁" s itting ▁in " ▁for ▁C ron k ite . ▁ ▁On ▁his ▁return , ▁C ron k ite ▁opened ▁by ▁j oking , ▁ ▁" Good ▁evening . ▁This ▁is ▁Walter ▁C ron k ite , ▁sitting ▁in ▁for ▁Arnold ▁Z en ker . ▁It ' s ▁good ▁to ▁be ▁back ." ▁▁▁ ▁During ▁the ▁strike , ▁ABC ▁producer ▁D ary l ▁Griff in ▁subst it uted ▁for ▁regular ▁anchor ▁Peter ▁Jenn ings , ▁and ▁Ch et ▁H unt ley ▁operated ▁without ▁David