▁ ▁In ▁ 1 9 6 3 , ▁the ▁site ▁was ▁connected ▁to ▁the ▁Sem i ▁Autom atic ▁Gr ound ▁Environment ▁( SA GE ) ▁Data ▁Centre ▁( DC - 3 1 ) ▁at ▁CF B ▁Go ose ▁Bay , ▁and ▁the ▁site ▁was ▁upgrad ed ▁to ▁an ▁AN / F PS - 9 3 A ▁and ▁AN / TP S - 5 0 2 ▁rad ars . ▁On ▁ 3 0 ▁June ▁ 1 9 7 1 , ▁the ▁US AF ▁transferred ▁control ▁of ▁the ▁site ▁to ▁the ▁Canadian ▁Forces , ▁which ▁closed ▁the ▁facility . ▁ ▁North ▁Warning ▁System ▁A ▁long ▁range , ▁ph ased ▁array ▁AN / F PS - 1 1 7 ▁ 3 - dimensional ▁air ▁search ▁surve ill ance ▁rad ar ▁and ▁a ▁do pp ler ▁AN / F PS - 1 2 4 ▁short - range ▁surve ill ance ▁rad ar ▁were ▁installed ▁in ▁November ▁ 1 9 8 9 ▁as ▁part ▁of ▁the ▁North ▁Warning ▁System ▁to ▁cover ▁any ▁rad ar ▁surve ill ance ▁g aps . ▁The ▁new ▁site ▁( LAB - 2 ) ▁consists ▁of ▁a ▁rad ar ▁to wers , ▁communic ations ▁facility , ▁and ▁storage ▁and ▁tunnel ▁connected ▁buildings ▁for ▁personnel . ▁ ▁US AF ▁units ▁and ▁assign ments ▁▁ ▁Units : ▁▁ 9 2 4 th ▁A ircraft ▁Control ▁and ▁Warning ▁Squadron , ▁Activ ated ▁at ▁Gren ier ▁A FB , ▁New ▁Ham pshire ▁ 1 3 ▁June ▁ 1 9 5 3 ▁ ▁M oved ▁to ▁S agle k