. . . . . . . "Army Air Defense Command" . . . . "Air Defense Sector, Montana" . . . . "1950" . . . . . . . . . . "1946" . . "1968" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Headquarters Air Defense Command" . . . . . . . . . . . "Continental Air Defense Command (CONAD)" . . . . . . . . . . "Western Contiguous Radar Line" . . "ADC" . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "Air Space Command / Aerospace Defense Command" . "637th Radar Squadron" . . . "Air Defense Command" . . . . . . . . . . "Air Defense Command (later redesignated Aerospace Defense Command) 15 January 1968" . . . "1980" . . . . . . . . . . . . . . . . . "Air Defence Command" . . . . . . . . . . . . . . . . . "air defense" . . . "Aerospace Defense Command" . . "Aerospace Defense Command" . . . . . . . . . . . . "ADCOM" . .