ɪt wʌzɐ "ɡˈæpfˈɪlɚ" ɪnðə pˈaɪntɹiː lˈaɪn sˈɛt ˌʌp tə mˈɑːnɪɾɚ ðə skˈaɪz fɔːɹ ˈɛɹkɹæft ɐpɹˈoʊtʃɪŋ fɹʌmðə nˈɔːɹθ.
It was a "gap-filler" in the Pinetree Line set up to monitor the skies for aircraft approaching from the north.