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https://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=128
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Sikorsky H-19 Chickasaw |
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https://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=129
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Sikorsky HH-3E Jolly Green Giant |
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https://www.militaryfactory.com/aircraft/detail.asp?aircraft_id=130
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McDonnell Douglas C-9 (Nightingale/Skytrain II) |
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https://en.wikipedia.org/wiki/Beechcraft_AT-10_Wichita
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https://en.wikipedia.org/wiki/Sikorsky_H-19_Chickasaw
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https://en.wikipedia.org/wiki/Sikorsky_S-61R
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https://www.sikorskyarchives.com/S-61 (HSS-2) Flupd.php
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http://www.nhahistoricalsociety.org/index.php/hh-3f-sikorsky-s-61r-pelican-helicopter/
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https://en.wikipedia.org/wiki/Semi-Automatic_Ground_Environment
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https://www.ll.mit.edu/about/history/sage-semi-automatic-ground-environment-air-defense-system
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