“空军一号”是美国总统的空中行宫,但它并非后者唯一的专机。半个多世纪以来,为在非常时期维系政府运作,华盛顿秘密运营着一支精锐的“空中舰队”;一旦“空军一号”无法正常履行职责,这些平时低调的“替补”就会披挂上阵,帮助总统远离险境。美国总统特朗普即将展开上任以来的第一次出访,高度复杂的安保与后勤服务,势必令这趟 “Air Force One” is the U.S. President’s aerial hangar, but it is not the latter’s only special plane. For more than half a century, in order to maintain the government’s operation in an extraordinary period, Washington secretly operated an elite “air fleet”; once these Air Force One failed to perform its duties, "Will go into battle to help the president away from danger. U.S. president Trump is about to start his first visit since assuming office, and highly sophisticated security and logistics services are bound to make this trip