right|thumb|356x356px|Kart som i grove trekk viser de tre forsvarslinjer. Fra nord til syd: Distant Early Warning (DEW) Line, Mid-Canada Line, og Pinetree Line. Pinetree Line var en serie med radarstasjoner tvers over de nordlige Forente stater og det sydlige Canada som i store trekk gikk langs den 50. breddegrad sammen med andre stasjoner langs atlanterhavskysten og stillehavskysten. Pinetree Line ble operert av NORAD (etter at det ble dannet). Over halvparten ble bemannet av personell fra United States Air Force og resten fra Royal Canadian Air Force. Radarstasjonene var det første samordnede system for tidlig oppsporing av et mulig bombeangrep fra Sovjetsamveldet mot Nord-Amerika, men før den tidlige radarteknologi fra 1950-tallet ble utdatert og systemet var i full drift.

Historie Planer for det som skulle bli Pinetree Line kom så tidlig som i 1946 innen Permanent Joint Board on Defence (PJBD), en felles amerikansk-canadisk organisasjon. Likevel, kostnadene ved drift av et slikt system i etterkrigstiden var før høye. I stedet konsentrerte Canada seg om områdene rundt Ontario og Quebec, mens USA satte opp stasjoner i Midtvesten og langs Østkysten.

Radarstasjoner Anlegg nr. Navn. Provins. Beliggenhet Ansvarsområde. Tjeneste Tatt i bruk. Nedlagt. C-53 CFS Alsask 44 Aircraft Control and Warning (later Radar) Squadron RCAF 1953 1986 C-15 CFS Armstrong 914th Aircraft Control and Warning Squadron 38 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1952 1974 C-20 CFS Baldy Hughes 918th Aircraft Control and Warning Squadron 54 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1953 1988 C-102 CFS Barrington } 672d Aircraft Control and Warning Squadron 23 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1957 1990 C-17 CFS Beausejour 916th Aircraft Control and Warning Squadron 48 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1953 1988 C-11 RCAF Beaverbank 22 Aircraft Control and Warning (later Radar) Squadron RCAF 1954 1964 C-21 RCAF Saskatoon Mountain CFS Beaverlodge 919th Aircraft Control and Warning Squadron 57 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1953 1988 N-28A Cape Makkovik Air Station 923d Aircraft Control and Warning Squadron USAF 1957 1961 N-27 Cartwright Air Station 922d Aircraft Control and Warning Squadron USAF 1953 1968 C-42 CFS Chibougamau 10 Aircraft Control and Warning (later Radar) Squadron RCAF 1962 1988 C-36 CFS Cold Lake 42 Aircraft Control and Warning (later Radar) Squadron RCAF 1954 1991 C-35 CFB Comox 51 Aircraft Control and Warning (later Radar) Squadron RCAF 1954 1958 N-27A Cut Throat Island Air Station 922d Aircraft Control and Warning Squadron USAF 1957 1961 C-52 CFS Dana 45 Aircraft Control and Warning (later Radar) Squadron RCAF 1964 1987 C-4 CFS Edgar 31 Aircraft Control and Warning (later Radar) Squadron RCAF 1953 1964 N-22B Elliston Ridge Air Station 642d Aircraft Control and Warning Squadron USAF 1957 1961 C-9 CFS Falconbridge 33 Aircraft Control and Warning (later Radar) Squadron RCAF 1952 1986 N-27C Fox Harbour Air Station 922d Aircraft Control and Warning Squadron USAF 1957 1961 C-3 CFS Foymount 32 Aircraft Control and Warning (later Radar) Squadron RCAF 1952 1974 N-31 Frobisher Bay AB 926th Aircraft Control and Warning Squadron USAF 1953 1961 N-25 CFB Gander 226 Aircraft Control and Warning (later Radar) Squadron RCAF 1953 1990 C-24 Goose Air Force Base Goose Air Defense Sector 64th Air Division 37th Air Division USAF 1953 1971 C-49 CFS Gypsumville 47 Aircraft Control and Warning (later Radar) Squadron RCAF 1962 1987 C-18 CFS Holberg 501 Aircraft Control and Warning (later Radar) Squadron 53 Radar Squadron RCAF 1954 1991 N-28 Hopedale Air Station } 923d Aircraft Control and Warning Squadron USAF 1953 1968 C-153 CFS Kamloops 825th Aircraft Control and Warning Squadron 56 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1957 1988 C-2 CFS Lac St. Denis 11 Aircraft Control and Warning (later Radar) Squadron RCAF 1952 1986 N-26B La Scie Air Station 921st Aircraft Control and Warning Squadron USAF 1957 1961 C-119 CFS Lowther 639th Aircraft Control and Warning Squadron 36 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1957 1987 N-24 Melville Air Station 107th Aircraft Control and Warning Squadron 641st Aircraft Control and Warning Squadron 641 Aircraft Control and Radar Squadron USAF RCAF 1953 1988 C-33 CFS Moisie 211 Aircraft Control and Warning (later Radar) Squadron RCAF 1953 1988 C-1 CFS Mont Apica 12 Aircraft Control and Warning (later Radar) Squadron RCAF 1952 1990 C-44 CFS Moosonee 15 Aircraft Control and Warning (later Radar) Squadron RCAF 1961 1975 C-14 RCAF Station Pagwa 913th Aircraft Control and Warning Squadron 37 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1952 1966 C-7 RCAF Parent 14 Aircraft Control and Warning (later Radar) Squadron RCAF 1954 1964 C-54 CFS Penhold 43 Aircraft Control and Warning (later Radar) Squadron RCAF 1964 1986 C-19 RCAF Station Puntzi Mountain 917th Aircraft Control and Warning Squadron 55 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1952 1966 C-10 CFS Ramore 912th Aircraft Control and Warning Squadron 35 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1953 1974 N-30 CFS Resolution Island 920th Aircraft Control and Warning Squadron USAF 1951 1961 N-29 Saglek Air Station 924th Aircraft Control and Warning Squadron USAF 1953 1970 C-8 CFS Senneterre 34 Aircraft Control and Warning (later Radar) Squadron RCAF 1953 1988 C-16 CFS Sioux Lookout 915th Aircraft Control and Warning Squadron 39 Aircraft Control and Warning (later Radar) Squadron USAF RCAF 1953 1987 N-27B Spotted Island Air Station 922d Aircraft Control and Warning Squadron USAF 1957 1961 N-26 Saint Anthony Air Station 921st Aircraft Control and Warning Squadron USAF 1953 1968 N-22 Red Cliff Air Station St. Johns Air Station 642d Aircraft Control and Warning Squadron USAF 1953 1961 C-5 CFS St. Margarets 21 Aircraft Control and Warning (later Radar) Squadron RCAF 1953 1988 C-6 RCAF St. Sylvestre 206 Aircraft Control and Warning (later Radar) Squadron RCAF 1955 1964 N-23 Stephenville Air Station 105th Aircraft Control and Warning Squadron 640th Aircraft Control and Warning Squadron USAF 1952 1971 C-34 CFS Sydney 221 Aircraft Control and Warning (later Radar) Squadron RCAF 1954 1991 C-36 RCAF Tofino 52 Aircraft Control and Warning Squadron RCAF 1955 1957 C-51 CFS Yorkton 46 Aircraft Control and Warning (later Radar) Squadron RCAF 1963 1986

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