Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Damuwa game da dogaro da kamfanonin jiragen sama na kasuwanci don jigilar shugaban kasa, shugabannin USAAF sun ba da umarnin sauya jirgin saman soja don biyan bukatun musamman na Babban Kwamandan. Jirgin sama na farko da aka keɓe don amfani da shugaban kasa shi ne jirgin saman C-87A VIP. Wannan jirgin sama, lambar 41-24159, an canza shi a 1943 don amfani da shi azaman jigilar VIP na shugaban kasa, Guess Where II, wanda aka yi niyyar ɗaukar Shugaba Franklin D. Roosevelt a kan tafiye-tafiye na duniya. Da an yarda da shi, da zai kasance jirgin sama na farko da za a yi amfani da shi a cikin sabis na shugaban kasa. Duk da haka, bayan nazarin rikodin tsaro na C-87 mai rikitarwa a cikin sabis, Asirin Asirin ya ƙi amincewa da Guess Where II don sufuri na shugaban kasa. Kamar yadda C-87 ya samo asali ne daga fashewar B-24 Liberator mai ƙarfi, ya gabatar da ra'ayoyi masu ƙarfi ga jiragen saman yaƙi na abokan gaba da kuma wuraren da aka ziyarta na ƙasashen waje, batun da ba a samu ba tare da jiragen sama da aka yi amfani da su kawai don sufuri. An yi amfani da Guess Where II don ɗaukar manyan mambobi na gwamnatin Roosevelt a kan tafiye-tafiye daban-daban. A watan Maris na shekarar 1944, ya dauke Eleanor Roosevelt a kan yawon shakatawa na kyawawan halaye na kasashe da dama na Latin Amurka. An cire C-87 a cikin 1945. Bayan haka, Asirin Sirri ya sake tsara Douglas C-54 Skymaster don aikin sufuri na shugaban kasa. Jirgin VC-54C, wanda aka yi wa laƙabi da Sacred Cow, ya haɗa da wurin barci, tarho na rediyo, da kuma ɗagawa mai ɗagawa don ɗaga Roosevelt a cikin kekensa. Kamar yadda aka gyara, Shugaba Roosevelt ya yi amfani da VC-54C sau ɗaya kawai kafin mutuwarsa, a kan tafiyarsa zuwa taron Yalta a watan Fabrairun 1945.Sacred Cow yanzu ana nunawa a Gidan Tarihi na Ƙasar Amurka a Wright-Patterson AFB, Ohio.  Tambaya: Menene sunan barkwanci na jirgin VC-54C?
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