Kammala wannan jumla: MG Cairns an haife shi ne ga likitan Sojoji, Lieutenant-Colonel Douglas Walker Cairns da matarsa, Ethel Moore Cairns, a ranar 14 ga Fabrairu, 1910, a Brooklyn, New York. Mahaifinsa, LTC Cairns ya tafi aiki a lokacin Yaƙin Duniya na Farko, yana fara sama da shekaru 100 na ba da sabis na aiki ba tare da katsewa ba tsakanin zuriyarsa. Dokta Cairns yana tare da Janar John J. "Blackjack" Pershing a lokacin da
Pancho Villa yawon shakatawa da kuma daga bisani a Governor Island, New York. Bugs Cairns da ɗan'uwansa, COL (Army Air Corps da USAF) Douglas Moore Cairns, sun kammala karatu daga West Point a cikin 1932 da 1933 bi da bi. An ambaci Cairns ga kakanninsa biyu, Brigadier Janar Robert Bogardus, wanda ya kasance mai kula da kare New York a lokacin yakin 1812, da kuma kawunsa, Kanar Robert Bogardus Snowden, wanda ya kasance ƙarshen mashin Longstreet a yakin Chickamauga a lokacin yakin basasa. Ya fito ne daga Kyaftin Robert Walker, wani jami'in a juyin juya halin Amurka, da kuma Lieutenant James Frisbie, wanda ya rasa ransa a karkashin umurnin John Paul Jones a kan Bon Homme Richard a cikin rikici tare da Serapis. Ya fito ne daga Dominie Everardus Bogardus, Fasto na farko na Dutch wanda ya isa New Amsterdam a 1634, da kuma Isaac Snowden, daya daga cikin masu ba da kuɗi na Continental Congress da kuma Treasurer na Birnin Philadelphia.