红旗-阿拉斯加 17-1 联合空战演习期间,美国空军一架C-17A运输机紧随“大力神”飞离埃尔门多夫-理查森联合基地。(A U.S. Air Force C-17 Globemaster III from Joint Base Elmendorf-Richardson flies behind several C-130J Hercules during a training sortie, Oct. 19, 2016. Training sorties are imperative to pilot development and overall mission effectiveness.)